Our top 10, at a glance.

Choose a rack case whose usable depth, lid clearance, rail hardware, weight, and transport design match the exact installed mobile-audio system.

  1. #1Gator GR-4SBest compact molded 4U rack
  2. #2SKB 1SKB-R4SBest gasketed shallow rack
  3. #3Odyssey FZER4Best shallow plywood flight case
  4. #4Gator GRR-4LBest rolling 4U molded rack
  5. #5ProX X-4U7DBest ultra-shallow effects rack
  6. #6Phenyx Pro PRCSE-4UBest organized wireless-system case
  7. #7SKB 1SKB-R6UWBest rolling 6U rack
  8. #8SKB 3i-2217M124U Fly RackBest removable waterproof fly rack
  9. #9Pelican-Hardigg ProRack 4UBest lighter industrial 4U rack
  10. #10Pelican-Hardigg BlackBox4UBest deep shock-mounted 4U rack

All 10 picks, in order.

  1. #1

    Best compact molded 4U rack

    Gator GR-4S

    Wireless receivers, processors, and other four-space equipment whose chassis and rear connections fit the published shallow dimensions.

    Why it fits

    • Four-space shallow molded-polyethylene rack case with removable front and rear access. [1]
    • Threaded field-replaceable 7-millimeter steel rails are fitted at the front and rear, with twist latches and recessed side handles. [2]

    Before you choose

    • Gator lists a 14.25-inch shallow profile, interior dimensions of 12.25 by 19 by 7 inches, exterior dimensions of 17.5 by 21.5 by 9.5 inches, and an 11-pound case weight. [3]

    Check before buying:

    • The headline depth and interior-length fields use different measurement conventions; measure chassis, plugs, bend radius, and lid clearance before ordering.

    Model: GR-4S · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at Gator Cases ↗

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  2. #2

    Best gasketed shallow rack

    SKB 1SKB-R4S

    A compact four-space build that benefits from full rear access, included rack screws, and gasketed lids.

    Why it fits

    • Four-space shallow LLDPE roto-molded rack with full front and rear lids. [4]
    • The case has steel threaded rails at both ends, 10-32 rack screws, gasketed lids, recessed twist latches, flush handles, and interlocking stacking ribs. [5]

    Before you choose

    • SKB lists 264 millimeters rail to rail, 311 millimeters from the front rail to the back lid, exterior dimensions of 565 by 406 by 244 millimeters, and a 5.6-kilogram weight. [6]

    Check before buying:

    • The retained page does not claim a submersion rating or establish clearance for a specific connector panel.

    Model: 1SKB-R4S · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at SKB ↗

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  3. #3

    Best shallow plywood flight case

    Odyssey FZER4

    A compact effects or processing rack where traditional flight-case hardware and removable lids are preferred.

    Why it fits

    • Four-space Flight Zone effects rack for shallow standard 19-inch rack equipment. [7]
    • The case uses front and rear rack rails, removable covers, steel ball corners, recessed latches, spring-loaded handles, and bottom rubber feet. [8]

    Before you choose

    • Odyssey lists 12.375 inches rail to rail, 15.875 inches from rail to cover, overall dimensions of 21.5 by 21.25 by 9 inches, and an approximate weight of 26 pounds. [9]

    Check before buying:

    • The page does not publish a payload rating, environmental ingress rating, or connector-specific rear-clearance allowance.

    Model: FZER4 · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at Odyssey ↗

    Find on Amazon ↗

  4. #4

    Best rolling 4U molded rack

    Gator GRR-4L

    A four-space mobile system that is carried less often because it can move on an integrated pull handle and wheels.

    Why it fits

    • Four-space rolling molded-polyethylene rack with a pull handle, recessed wheels, and locking lids. [10]
    • The case includes front and rear threaded field-replaceable 7-millimeter steel rails, heavy-duty twist latches, and recessed side handles. [11]

    Before you choose

    • Gator describes the rack as 19 inches deep and lists interior dimensions of 16.5 by 19 by 7 inches, exterior dimensions of 23.03 by 22.24 by 9.5 inches, and a 17-pound weight. [12]

    Check before buying:

    • The retained page does not publish a payload limit or explain the difference between named rack depth and the interior-length field.

    Model: GRR-4L · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at Gator Cases ↗

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  5. #5

    Best ultra-shallow effects rack

    ProX X-4U7D

    Very short processors, filters, patch hardware, or other four-space devices that fit within seven inches between rails.

    Why it fits

    • Four-space front-load effects rack with a seven-inch rail-to-rail depth. [13]
    • The case uses laminated 3/8-inch plywood, dual rack rails, removable front and rear lids, steel ball corners, butterfly latches, and a recessed spring-action handle. [14]

    Before you choose

    • ProX lists 2.5-inch front and rear lid depths, interior dimensions of 7 by 19 by 7 inches, exterior dimensions of 8.5 by 20.5 by 13 inches, and a 15-pound weight. [15]

    Check before buying:

    • The page does not publish a payload rating, and many amplifiers, drawers, and cable looms will exceed the seven-inch rack depth.

    Model: X-4U7D · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at ProX ↗

    Find on Amazon ↗

  6. #6

    Best organized wireless-system case

    Phenyx Pro PRCSE-4U

    A shallow four-space wireless rack whose microphones, bodypacks, and small accessories should travel in the lids.

    Why it fits

    • Four-space shallow 19-inch HDPE rack case designed around wireless microphone, IEM, and amplifier systems. [16]
    • Detachable covers add a front insert for up to three microphones and two bodypacks plus a rear mesh pocket for cables, power supplies, or effects units. [17]

    Before you choose

    • Phenyx lists exterior dimensions of 570 by 390 by 264 millimeters, interior dimensions of 500 by 260 by 181 millimeters, a 30-to-40-kilogram rail capacity, and incompatibility with its PRDWR-2U drawer. [18]

    Check before buying:

    • The retained page does not provide a rail-to-rail depth field or an independent ingress test; exact third-party chassis and connector clearance still need measurement.

    Model: PRCSE-4U · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at Phenyx Pro ↗

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  7. #7

    Best rolling 6U rack

    SKB 1SKB-R6UW

    A larger mobile rack that needs six spaces, full-depth hardware clearance, and built-in rolling transport.

    Why it fits

    • Six-space LLDPE roto-molded rolling rack with an integrated one-touch pull handle and lid-mounted wheels. [19]
    • The rack has front and rear threaded steel rails, 10-32 screws, gasketed lids, recessed Mil-Spec twist latches, flush handles, rubber feet, and stacking ribs. [20]

    Before you choose

    • SKB lists 445 millimeters rail to rail, 518 millimeters from front rail to back lid, exterior dimensions of 673 by 572 by 381 millimeters, and an 11.5-kilogram weight. [21]

    Check before buying:

    • The retained page does not publish a payload limit, flight-checking approval, or shock-isolation system.

    Model: 1SKB-R6UW · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at SKB ↗

    Find on Amazon ↗

  8. #8

    Best removable waterproof fly rack

    SKB 3i-2217M124U Fly Rack

    Delicate four-space equipment that needs a removable rack frame and a sealed wheeled outer case for shipping or travel.

    Why it fits

    • Four-space removable rack frame carried inside a gasket-sealed IP67 iSeries injection-molded case. [22]
    • The rack is cushioned by PE foam and the outer case includes wheels, a pull handle, locking Trigger Latches, and an automatic pressure-equalization valve. [23]

    Before you choose

    • SKB lists a 323-millimeter rail-to-rail depth, exterior dimensions of 622 by 495 by 368 millimeters, and a 13-kilogram product weight. [24]

    Check before buying:

    • IP67 describes the closed outer case; airline acceptance, installed-equipment fragility, foam condition, and total loaded weight require separate checks.

    Model: 3i-2217M124U · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at SKB ↗

    Find on Amazon ↗

  9. #9

    Best lighter industrial 4U rack

    Pelican-Hardigg ProRack 4U

    Field electronics and amplifiers that need an 18-inch rack and a bounded 75-pound payload without the bulk of a suspended shock frame.

    Why it fits

    • Four-space, 18-inch-deep roto-molded EIA rack for field-deployed electronics without a shock-mounted frame. [25]
    • An aircraft-aluminum rack frame is mounted in a front-and-rear-opening case; Pelican explicitly describes the ProRack as a non-shock-mounted system. [26]

    Before you choose

    • Pelican lists equipment up to 75 pounds, exterior dimensions of 22 by 22.4 by 11.3 inches, 1.81-inch lid depths at both ends, and a 20.9-pound case weight. [27]

    Check before buying:

    • The rack is not shock mounted, and the stated fragility range is not a promise that a particular audio device will survive a specific drop or shipment.

    Model: PR2008-01-18-01 · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at Pelican-Hardigg ↗

    Find on Amazon ↗

  10. #10

    Best deep shock-mounted 4U rack

    Pelican-Hardigg BlackBox4U

    Deep, heavier equipment that justifies a suspended steel frame, asymmetric lid clearance, and a much larger transport footprint.

    Why it fits

    • Four-space off-the-shelf roto-molded rack with a 24-inch light-duty steel frame and cylindrical elastomeric shock mounts. [28]
    • Eight shock mounts attach the frame to the case body, while molded 3.25-inch edge casters and eight comfort-grip handles support movement. [29]

    Before you choose

    • Pelican lists an 80-to-100-pound payload range, exterior dimensions of 38.5 by 24.6 by 13.1 inches, front and rear lid depths of 2.2 and 5.2 inches, and a 47-pound empty weight. [30]

    Check before buying:

    • The case is heavy before equipment is installed, and the stated shock system and payload do not establish survival for a specific device or handling event.

    Model: BlackBox4U · Current official United States-facing or manufacturer regional product configuration reviewed for this comparison · United States

    Check current details at Pelican-Hardigg ↗

    Find on Amazon ↗

The details, side by side.

Published specifications and features
What matters#1Gator GR-4S#2SKB 1SKB-R4S#3Odyssey FZER4#4Gator GRR-4L#5ProX X-4U7D#6Phenyx Pro PRCSE-4U#7SKB 1SKB-R6UW#8SKB 3i-2217M124U Fly Rack#9Pelican-Hardigg ProRack 4U#10Pelican-Hardigg BlackBox4U
TypeFour-space shallow molded-polyethylene rack case with removable front and rear access. [1]Four-space shallow LLDPE roto-molded rack with full front and rear lids. [4]Four-space Flight Zone effects rack for shallow standard 19-inch rack equipment. [7]Four-space rolling molded-polyethylene rack with a pull handle, recessed wheels, and locking lids. [10]Four-space front-load effects rack with a seven-inch rail-to-rail depth. [13]Four-space shallow 19-inch HDPE rack case designed around wireless microphone, IEM, and amplifier systems. [16]Six-space LLDPE roto-molded rolling rack with an integrated one-touch pull handle and lid-mounted wheels. [19]Four-space removable rack frame carried inside a gasket-sealed IP67 iSeries injection-molded case. [22]Four-space, 18-inch-deep roto-molded EIA rack for field-deployed electronics without a shock-mounted frame. [25]Four-space off-the-shelf roto-molded rack with a 24-inch light-duty steel frame and cylindrical elastomeric shock mounts. [28]
DesignThreaded field-replaceable 7-millimeter steel rails are fitted at the front and rear, with twist latches and recessed side handles. [2]The case has steel threaded rails at both ends, 10-32 rack screws, gasketed lids, recessed twist latches, flush handles, and interlocking stacking ribs. [5]The case uses front and rear rack rails, removable covers, steel ball corners, recessed latches, spring-loaded handles, and bottom rubber feet. [8]The case includes front and rear threaded field-replaceable 7-millimeter steel rails, heavy-duty twist latches, and recessed side handles. [11]The case uses laminated 3/8-inch plywood, dual rack rails, removable front and rear lids, steel ball corners, butterfly latches, and a recessed spring-action handle. [14]Detachable covers add a front insert for up to three microphones and two bodypacks plus a rear mesh pocket for cables, power supplies, or effects units. [17]The rack has front and rear threaded steel rails, 10-32 screws, gasketed lids, recessed Mil-Spec twist latches, flush handles, rubber feet, and stacking ribs. [20]The rack is cushioned by PE foam and the outer case includes wheels, a pull handle, locking Trigger Latches, and an automatic pressure-equalization valve. [23]An aircraft-aluminum rack frame is mounted in a front-and-rear-opening case; Pelican explicitly describes the ProRack as a non-shock-mounted system. [26]Eight shock mounts attach the frame to the case body, while molded 3.25-inch edge casters and eight comfort-grip handles support movement. [29]
FitGator lists a 14.25-inch shallow profile, interior dimensions of 12.25 by 19 by 7 inches, exterior dimensions of 17.5 by 21.5 by 9.5 inches, and an 11-pound case weight. [3]SKB lists 264 millimeters rail to rail, 311 millimeters from the front rail to the back lid, exterior dimensions of 565 by 406 by 244 millimeters, and a 5.6-kilogram weight. [6]Odyssey lists 12.375 inches rail to rail, 15.875 inches from rail to cover, overall dimensions of 21.5 by 21.25 by 9 inches, and an approximate weight of 26 pounds. [9]Gator describes the rack as 19 inches deep and lists interior dimensions of 16.5 by 19 by 7 inches, exterior dimensions of 23.03 by 22.24 by 9.5 inches, and a 17-pound weight. [12]ProX lists 2.5-inch front and rear lid depths, interior dimensions of 7 by 19 by 7 inches, exterior dimensions of 8.5 by 20.5 by 13 inches, and a 15-pound weight. [15]Phenyx lists exterior dimensions of 570 by 390 by 264 millimeters, interior dimensions of 500 by 260 by 181 millimeters, a 30-to-40-kilogram rail capacity, and incompatibility with its PRDWR-2U drawer. [18]SKB lists 445 millimeters rail to rail, 518 millimeters from front rail to back lid, exterior dimensions of 673 by 572 by 381 millimeters, and an 11.5-kilogram weight. [21]SKB lists a 323-millimeter rail-to-rail depth, exterior dimensions of 622 by 495 by 368 millimeters, and a 13-kilogram product weight. [24]Pelican lists equipment up to 75 pounds, exterior dimensions of 22 by 22.4 by 11.3 inches, 1.81-inch lid depths at both ends, and a 20.9-pound case weight. [27]Pelican lists an 80-to-100-pound payload range, exterior dimensions of 38.5 by 24.6 by 13.1 inches, front and rear lid depths of 2.2 and 5.2 inches, and a 47-pound empty weight. [30]

Measure the installed system, not the empty chassis

Add rear plugs, antenna hardware, power connectors, cable bend radius, and the space needed to close each lid. Rail-to-rail depth, rail-to-lid depth, and exterior depth answer different fit questions. [3] [6] [9] [12] [15] [18] [21] [24] [27] [30]

Calculate the loaded move before choosing wheels

Four spaces can still become difficult to carry after amplifiers, drawers, power distribution, and cabling are installed. Integrated wheels reduce carrying, while a larger rolling case also consumes more vehicle and storage space. [2] [5] [8] [11] [14] [17] [20] [23] [26] [29]

Match the protection system to the transport risk

A gasketed molded shell, a plywood flight case, a removable waterproof outer case, a direct-mounted industrial frame, and a suspended shock rack solve different problems. Check the exact environmental and shock design instead of treating every hard rack as equivalent. [1] [4] [7] [10] [13] [16] [19] [22] [25] [28]

How we compared.

Source-based desk research from current official manufacturer pages reviewed September 22, 2026. A focused reading of live-sound and rack-building discussions shaped checks for chassis depth, rear connectors, cable bend radius, included rack hardware, loaded weight, and whether shock isolation is actually present; anecdotes are not treated as product-specific proof or owner consensus. Ranking separates shallow, standard-depth, rolling, organized-wireless, waterproof removable-frame, industrial direct-frame, and suspended shock-rack decisions without claiming hands-on testing, universal airline acceptance, or promised impact survival.

How we choose

Sources

Official product documentation, reviewed September 22, 2026.

Gator GR-4S official product page ↗

Gator Cases · United States · Read September 22, 2026

SKB 1SKB-R4S official product page ↗

SKB Europe · United States · Read September 22, 2026

Odyssey FZER4 official product page ↗

Odyssey Innovative Designs · United States · Read September 22, 2026

Gator GRR-4L official product page ↗

Gator Cases · United States · Read September 22, 2026

ProX X-4U7D official product page ↗

ProX Live Performance Gear · United States · Read September 22, 2026

Phenyx Pro PRCSE-4U official product page ↗

Phenyx Pro · United States · Read September 22, 2026

SKB 1SKB-R6UW official product page ↗

SKB Europe · United States · Read September 22, 2026

SKB 3i-2217M124U official product page ↗

SKB Europe · United States · Read September 22, 2026

Pelican-Hardigg PR2008-01-18-01 official product page ↗

Pelican Products · United States · Read September 22, 2026

Pelican-Hardigg BlackBox4U official product page ↗

Pelican Products · United States · Read September 22, 2026

Detailed source notes
  1. Gator GR-4S: Four-space shallow molded-polyethylene rack case with removable front and rear access.

    Manufacturer-stated for Gator GR-4S; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Gator GR-4S official product page · Type field in retained evidence note from the official source.
    Four-space shallow molded-polyethylene rack case with removable front and rear access.

    Checked September 22, 2026

  2. Gator GR-4S: Threaded field-replaceable 7-millimeter steel rails are fitted at the front and rear, with twist latches and recessed side handles.

    Manufacturer-stated for Gator GR-4S; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Gator GR-4S official product page · Design field in retained evidence note from the official source.
    Threaded field-replaceable 7-millimeter steel rails are fitted at the front and rear, with twist latches and recessed side handles.

    Checked September 22, 2026

  3. Gator GR-4S: Gator lists a 14.25-inch shallow profile, interior dimensions of 12.25 by 19 by 7 inches, exterior dimensions of 17.5 by 21.5 by 9.5 inches, and an 11-pound case weight.

    Manufacturer-stated for Gator GR-4S; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Gator GR-4S official product page · Fit field in retained evidence note from the official source.
    Gator lists a 14.25-inch shallow profile, interior dimensions of 12.25 by 19 by 7 inches, exterior dimensions of 17.5 by 21.5 by 9.5 inches, and an 11-pound case weight.

    Checked September 22, 2026

  4. SKB 1SKB-R4S: Four-space shallow LLDPE roto-molded rack with full front and rear lids.

    Manufacturer-stated for SKB 1SKB-R4S; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 1SKB-R4S official product page · Type field in retained evidence note from the official source.
    Four-space shallow LLDPE roto-molded rack with full front and rear lids.

    Checked September 22, 2026

  5. SKB 1SKB-R4S: The case has steel threaded rails at both ends, 10-32 rack screws, gasketed lids, recessed twist latches, flush handles, and interlocking stacking ribs.

    Manufacturer-stated for SKB 1SKB-R4S; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 1SKB-R4S official product page · Design field in retained evidence note from the official source.
    The case has steel threaded rails at both ends, 10-32 rack screws, gasketed lids, recessed twist latches, flush handles, and interlocking stacking ribs.

    Checked September 22, 2026

  6. SKB 1SKB-R4S: SKB lists 264 millimeters rail to rail, 311 millimeters from the front rail to the back lid, exterior dimensions of 565 by 406 by 244 millimeters, and a 5.6-kilogram weight.

    Manufacturer-stated for SKB 1SKB-R4S; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 1SKB-R4S official product page · Fit field in retained evidence note from the official source.
    SKB lists 264 millimeters rail to rail, 311 millimeters from the front rail to the back lid, exterior dimensions of 565 by 406 by 244 millimeters, and a 5.6-kilogram weight.

    Checked September 22, 2026

  7. Odyssey FZER4: Four-space Flight Zone effects rack for shallow standard 19-inch rack equipment.

    Manufacturer-stated for Odyssey FZER4; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Odyssey FZER4 official product page · Type field in retained evidence note from the official source.
    Four-space Flight Zone effects rack for shallow standard 19-inch rack equipment.

    Checked September 22, 2026

  8. Odyssey FZER4: The case uses front and rear rack rails, removable covers, steel ball corners, recessed latches, spring-loaded handles, and bottom rubber feet.

    Manufacturer-stated for Odyssey FZER4; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Odyssey FZER4 official product page · Design field in retained evidence note from the official source.
    The case uses front and rear rack rails, removable covers, steel ball corners, recessed latches, spring-loaded handles, and bottom rubber feet.

    Checked September 22, 2026

  9. Odyssey FZER4: Odyssey lists 12.375 inches rail to rail, 15.875 inches from rail to cover, overall dimensions of 21.5 by 21.25 by 9 inches, and an approximate weight of 26 pounds.

    Manufacturer-stated for Odyssey FZER4; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Odyssey FZER4 official product page · Fit field in retained evidence note from the official source.
    Odyssey lists 12.375 inches rail to rail, 15.875 inches from rail to cover, overall dimensions of 21.5 by 21.25 by 9 inches, and an approximate weight of 26 pounds.

    Checked September 22, 2026

  10. Gator GRR-4L: Four-space rolling molded-polyethylene rack with a pull handle, recessed wheels, and locking lids.

    Manufacturer-stated for Gator GRR-4L; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Gator GRR-4L official product page · Type field in retained evidence note from the official source.
    Four-space rolling molded-polyethylene rack with a pull handle, recessed wheels, and locking lids.

    Checked September 22, 2026

  11. Gator GRR-4L: The case includes front and rear threaded field-replaceable 7-millimeter steel rails, heavy-duty twist latches, and recessed side handles.

    Manufacturer-stated for Gator GRR-4L; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Gator GRR-4L official product page · Design field in retained evidence note from the official source.
    The case includes front and rear threaded field-replaceable 7-millimeter steel rails, heavy-duty twist latches, and recessed side handles.

    Checked September 22, 2026

  12. Gator GRR-4L: Gator describes the rack as 19 inches deep and lists interior dimensions of 16.5 by 19 by 7 inches, exterior dimensions of 23.03 by 22.24 by 9.5 inches, and a 17-pound weight.

    Manufacturer-stated for Gator GRR-4L; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Gator GRR-4L official product page · Fit field in retained evidence note from the official source.
    Gator describes the rack as 19 inches deep and lists interior dimensions of 16.5 by 19 by 7 inches, exterior dimensions of 23.03 by 22.24 by 9.5 inches, and a 17-pound weight.

    Checked September 22, 2026

  13. ProX X-4U7D: Four-space front-load effects rack with a seven-inch rail-to-rail depth.

    Manufacturer-stated for ProX X-4U7D; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    ProX X-4U7D official product page · Type field in retained evidence note from the official source.
    Four-space front-load effects rack with a seven-inch rail-to-rail depth.

    Checked September 22, 2026

  14. ProX X-4U7D: The case uses laminated 3/8-inch plywood, dual rack rails, removable front and rear lids, steel ball corners, butterfly latches, and a recessed spring-action handle.

    Manufacturer-stated for ProX X-4U7D; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    ProX X-4U7D official product page · Design field in retained evidence note from the official source.
    The case uses laminated 3/8-inch plywood, dual rack rails, removable front and rear lids, steel ball corners, butterfly latches, and a recessed spring-action handle.

    Checked September 22, 2026

  15. ProX X-4U7D: ProX lists 2.5-inch front and rear lid depths, interior dimensions of 7 by 19 by 7 inches, exterior dimensions of 8.5 by 20.5 by 13 inches, and a 15-pound weight.

    Manufacturer-stated for ProX X-4U7D; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    ProX X-4U7D official product page · Fit field in retained evidence note from the official source.
    ProX lists 2.5-inch front and rear lid depths, interior dimensions of 7 by 19 by 7 inches, exterior dimensions of 8.5 by 20.5 by 13 inches, and a 15-pound weight.

    Checked September 22, 2026

  16. Phenyx Pro PRCSE-4U: Four-space shallow 19-inch HDPE rack case designed around wireless microphone, IEM, and amplifier systems.

    Manufacturer-stated for Phenyx Pro PRCSE-4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Phenyx Pro PRCSE-4U official product page · Type field in retained evidence note from the official source.
    Four-space shallow 19-inch HDPE rack case designed around wireless microphone, IEM, and amplifier systems.

    Checked September 22, 2026

  17. Phenyx Pro PRCSE-4U: Detachable covers add a front insert for up to three microphones and two bodypacks plus a rear mesh pocket for cables, power supplies, or effects units.

    Manufacturer-stated for Phenyx Pro PRCSE-4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Phenyx Pro PRCSE-4U official product page · Design field in retained evidence note from the official source.
    Detachable covers add a front insert for up to three microphones and two bodypacks plus a rear mesh pocket for cables, power supplies, or effects units.

    Checked September 22, 2026

  18. Phenyx Pro PRCSE-4U: Phenyx lists exterior dimensions of 570 by 390 by 264 millimeters, interior dimensions of 500 by 260 by 181 millimeters, a 30-to-40-kilogram rail capacity, and incompatibility with its PRDWR-2U drawer.

    Manufacturer-stated for Phenyx Pro PRCSE-4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Phenyx Pro PRCSE-4U official product page · Fit field in retained evidence note from the official source.
    Phenyx lists exterior dimensions of 570 by 390 by 264 millimeters, interior dimensions of 500 by 260 by 181 millimeters, a 30-to-40-kilogram rail capacity, and incompatibility with its PRDWR-2U drawer.

    Checked September 22, 2026

  19. SKB 1SKB-R6UW: Six-space LLDPE roto-molded rolling rack with an integrated one-touch pull handle and lid-mounted wheels.

    Manufacturer-stated for SKB 1SKB-R6UW; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 1SKB-R6UW official product page · Type field in retained evidence note from the official source.
    Six-space LLDPE roto-molded rolling rack with an integrated one-touch pull handle and lid-mounted wheels.

    Checked September 22, 2026

  20. SKB 1SKB-R6UW: The rack has front and rear threaded steel rails, 10-32 screws, gasketed lids, recessed Mil-Spec twist latches, flush handles, rubber feet, and stacking ribs.

    Manufacturer-stated for SKB 1SKB-R6UW; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 1SKB-R6UW official product page · Design field in retained evidence note from the official source.
    The rack has front and rear threaded steel rails, 10-32 screws, gasketed lids, recessed Mil-Spec twist latches, flush handles, rubber feet, and stacking ribs.

    Checked September 22, 2026

  21. SKB 1SKB-R6UW: SKB lists 445 millimeters rail to rail, 518 millimeters from front rail to back lid, exterior dimensions of 673 by 572 by 381 millimeters, and an 11.5-kilogram weight.

    Manufacturer-stated for SKB 1SKB-R6UW; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 1SKB-R6UW official product page · Fit field in retained evidence note from the official source.
    SKB lists 445 millimeters rail to rail, 518 millimeters from front rail to back lid, exterior dimensions of 673 by 572 by 381 millimeters, and an 11.5-kilogram weight.

    Checked September 22, 2026

  22. SKB 3i-2217M124U Fly Rack: Four-space removable rack frame carried inside a gasket-sealed IP67 iSeries injection-molded case.

    Manufacturer-stated for SKB 3i-2217M124U Fly Rack; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 3i-2217M124U official product page · Type field in retained evidence note from the official source.
    Four-space removable rack frame carried inside a gasket-sealed IP67 iSeries injection-molded case.

    Checked September 22, 2026

  23. SKB 3i-2217M124U Fly Rack: The rack is cushioned by PE foam and the outer case includes wheels, a pull handle, locking Trigger Latches, and an automatic pressure-equalization valve.

    Manufacturer-stated for SKB 3i-2217M124U Fly Rack; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 3i-2217M124U official product page · Design field in retained evidence note from the official source.
    The rack is cushioned by PE foam and the outer case includes wheels, a pull handle, locking Trigger Latches, and an automatic pressure-equalization valve.

    Checked September 22, 2026

  24. SKB 3i-2217M124U Fly Rack: SKB lists a 323-millimeter rail-to-rail depth, exterior dimensions of 622 by 495 by 368 millimeters, and a 13-kilogram product weight.

    Manufacturer-stated for SKB 3i-2217M124U Fly Rack; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    SKB 3i-2217M124U official product page · Fit field in retained evidence note from the official source.
    SKB lists a 323-millimeter rail-to-rail depth, exterior dimensions of 622 by 495 by 368 millimeters, and a 13-kilogram product weight.

    Checked September 22, 2026

  25. Pelican-Hardigg ProRack 4U: Four-space, 18-inch-deep roto-molded EIA rack for field-deployed electronics without a shock-mounted frame.

    Manufacturer-stated for Pelican-Hardigg ProRack 4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Pelican-Hardigg PR2008-01-18-01 official product page · Type field in retained evidence note from the official source.
    Four-space, 18-inch-deep roto-molded EIA rack for field-deployed electronics without a shock-mounted frame.

    Checked September 22, 2026

  26. Pelican-Hardigg ProRack 4U: An aircraft-aluminum rack frame is mounted in a front-and-rear-opening case; Pelican explicitly describes the ProRack as a non-shock-mounted system.

    Manufacturer-stated for Pelican-Hardigg ProRack 4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Pelican-Hardigg PR2008-01-18-01 official product page · Design field in retained evidence note from the official source.
    An aircraft-aluminum rack frame is mounted in a front-and-rear-opening case; Pelican explicitly describes the ProRack as a non-shock-mounted system.

    Checked September 22, 2026

  27. Pelican-Hardigg ProRack 4U: Pelican lists equipment up to 75 pounds, exterior dimensions of 22 by 22.4 by 11.3 inches, 1.81-inch lid depths at both ends, and a 20.9-pound case weight.

    Manufacturer-stated for Pelican-Hardigg ProRack 4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Pelican-Hardigg PR2008-01-18-01 official product page · Fit field in retained evidence note from the official source.
    Pelican lists equipment up to 75 pounds, exterior dimensions of 22 by 22.4 by 11.3 inches, 1.81-inch lid depths at both ends, and a 20.9-pound case weight.

    Checked September 22, 2026

  28. Pelican-Hardigg BlackBox4U: Four-space off-the-shelf roto-molded rack with a 24-inch light-duty steel frame and cylindrical elastomeric shock mounts.

    Manufacturer-stated for Pelican-Hardigg BlackBox4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Pelican-Hardigg BlackBox4U official product page · Type field in retained evidence note from the official source.
    Four-space off-the-shelf roto-molded rack with a 24-inch light-duty steel frame and cylindrical elastomeric shock mounts.

    Checked September 22, 2026

  29. Pelican-Hardigg BlackBox4U: Eight shock mounts attach the frame to the case body, while molded 3.25-inch edge casters and eight comfort-grip handles support movement.

    Manufacturer-stated for Pelican-Hardigg BlackBox4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Pelican-Hardigg BlackBox4U official product page · Design field in retained evidence note from the official source.
    Eight shock mounts attach the frame to the case body, while molded 3.25-inch edge casters and eight comfort-grip handles support movement.

    Checked September 22, 2026

  30. Pelican-Hardigg BlackBox4U: Pelican lists an 80-to-100-pound payload range, exterior dimensions of 38.5 by 24.6 by 13.1 inches, front and rear lid depths of 2.2 and 5.2 inches, and a 47-pound empty weight.

    Manufacturer-stated for Pelican-Hardigg BlackBox4U; verify installed rack depth, connector clearance, loaded weight, rail hardware, transport method, and intended use before purchase.

    Pelican-Hardigg BlackBox4U official product page · Fit field in retained evidence note from the official source.
    Pelican lists an 80-to-100-pound payload range, exterior dimensions of 38.5 by 24.6 by 13.1 inches, front and rear lid depths of 2.2 and 5.2 inches, and a 47-pound empty weight.

    Checked September 22, 2026

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