SKB 4U 20 in. Roto Shockmount Rolling Rack

Compact and durable, the SKB 3SKB-R04U20W is a 4U shock rack case built for standard rack-mounted equipment, offering 20 in.
Color
Black
Material
LMDPE Polyethylene

Key specifications

Rack Units
4U
Rackable Depth
20 in.
Rackable Width
19 in. Standard EIA
Exterior
28.5 x 28 x 16 in.
Lid Depth
2.25 in. Front / 2.25 in. Rear
Weight
44.25 lbs
Wheels
Pull Handle Wheeled

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Key features

4U Rack Case

20-inch Deep

Rolling Shock Rack

Built-In Wheels

Low Profile Pull Handle

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Made in USA
Made in USA refers to a product that is virtually completely made in the United States of America. Any components not produced in the United States is negligible.
Lifetime Warranty
A Lifetime Warranty refers to a guarantee that the case is fully warranted against defects in materials and craftsmanship for the life of the case to the original owner. If your case breaks, we will supply replacement parts, repair the case, or replace your case for as long as you own it. Some conditions apply, please see individual manufacturer’s warranties.
Satisfaction Guaranteed
Satisfaction Guaranteed is a promise that we ensure our customers are satisfied with the quality of the products they purchase from us and that they are free from any defects in materials or workmanship. We do our absolute best to be sure everyone gets satisfactory service and support.
Water Resistant
Water-resistant means that a case can resist the penetration of water to some degree but is not completely impervious. It offers limited protection against moisture—such as rain, splashes, or brief exposure—but is not designed for full submersion.
Wheels
This case is equipped with wheels that make transporting your gear smooth and effortless. The durable wheels allow you to roll the case with ease—no heavy lifting required. It's the perfect solution for professionals who need mobility without sacrificing protection.

Product information

Details, specifications & reviews

Description

SKB 4U 20 Inch Deep Roto Shockmount Rolling Rack

Imagine a rack case with the mobility of a luggage cart, and you get SKBs rolling shockmount rack case! These cases allow easy transport of your rackmount gear, eliminating the need for caster wheels, or needing an extra hand to lift a heavy chassis. You will have SKBs Million Mile Warranty along for the ride, too.

One of Specialty Cases bestselling products, SKBs shockmount rack cases are where convenience meets maximum protection. These designs are almost always in stock, ready to go, providing an alternative to custom-build wood racks. And since they are rotationally molded of LMDPE for maximum impact resistance, you will lose the worry of your equipment being protected. The latest in shockmount technology is all here, with elastomeric shocks, threaded steel rails, and aluminum cross components for strength and durability.

The Rolling Shockmount Case series incorporates our black powder coated twist latches with locking loops and low profile injection molded pull handle with a 20 inch deep tough shell. The molded design provides extra stiffness in the lids and sides and allows for secure stacking. Rack depth front to rear rail is 20 inches and each lid is 2-1/4 inches deep. Rack rails are pre-threaded for standard 10-32 hardware and the mounting screws are included. Doors are fully usable even when racks are stacked together. Elastomeric shocks protect even the heaviest of loads. Sliding retractable handle, ambient pressure relief valve, oversized snap-down handles on each side, roller blade wheels, and gasket protected front and rear doors are all standard equipment.

The 4U Roto Shockmount Rack Case is produced through a process called rotational molding - a 3-stage heating process that results in evenness all around the edges of the case. The polyethylene material is inserted into a mold, and then gradually rotated until the material sticks to the edges of the mold in an even pattern. Once cooled, this plastic material forms a strong bond that minimizes sagging and potential collapse.

Designed for maximum protection and shock absorbency, it is constructed with adjustable elastomer shock absorbers that deliver the kind of security you want from a shippable case. There is also room to add another layer of shock absorbency. Within the case there is plenty of room for air to circulate - a major consideration for sensitive audio equipment. Rear rails make inserting and removing equipment much easier. In addition, both the front and rear have full sized lids for even more accessibility to the contents.

The 3SKB-R04U20W is a compact 4U rolling shock rack case for systems that need 20 in. rack depth in a more transport-friendly format. With wheels and a retractable pull handle, it is a practical choice for smaller rack-mounted setups that require rugged protection and easier mobility.

  • Rack Units: 4U
  • Standard 19 in. rack width per ANSI/EIA-310-C
  • Rack depth 19.75 in. rail to rail
  • Built-in wheels making navigating ramps and hallways easier
  • Low profile injection molded pull handle
  • Oversized snap-down handles on each side
  • Threaded steel rails
  • Includes rear rails
  • Black powder coated twist latches with locking loops
  • Gasket protected front and rear doors
  • Elastomeric shocks protect even the heaviest of loads
  • Standard payload range of 40 to 150 lbs
  • Optional extended payload range 160 to 300 lbs
  • Roto-molded for strength
  • Shock and water resistant
  • ATA 300 Rated
  • Mounting hardware is included
  • Molded, stackable design
  • Ambient pressure relief valve
  • Provides additional strength for sensitive equipment
  • Plenty of room for air circulation within the case
  • Weighs less than traditional wood rack crates
  • Meets most ATA and Military specifications
  • Includes Million Mile Warranty
  • Proudly Made in the USA

3SKB-R04U20W - UPC Code: 789270090422 | MPN: 3SKB-R04U20W

Specs
Weight44.250000
ColorBlack
GTIN789270090422
Manufacturer Part Number3SKB-R04U20W
BrandSKB
Manufacturing ProcessRoto Molded
Rack Units4U
Interior Dimensions20 x 19 x 7 in.
Interior Volume1.54 cu ft
Exterior Dimensions28.5 x 28 x 16 in.
Front Lid Depth2.25 in.
Rear Lid Depth2.25 in.
Rack Depth20 in.
Depth Front Rail To Back Lid22.25 in.
Rack DesignFixed
Rail TypeThreaded Rails
Standard Payload40 to 150 Lbs.
Optional Payload160 to 300 Lbs (3SKB-SA)
Shock AbsorbersYes
WheelsYes
LatchesRecessed Heavy Duty Twist Latches
HandleRubber Overmolded Handles
Retractable HandleYes
StackableYes
Removable LidYes
Airline Carry OnNo
Airline Check InYes
ATA RatedYes
Water ProtectionWater-Resistant
Exterior MaterialLMDPE Polyethylene
Body MaterialLinear Medium Density Polyethylene (LMDPE)
Customer Return Policy for This ProductStock Case — Standard 30-Day Returns
Transporting and Shipping Options
Small Package
Small Package Service refers to cases that can ship via UPS, Fedex or USPS and would be charged a standard rate based on the weight. Cases must weigh less than 150 lbs. and meet certain dimensional requirements. Always check the carrier’s small package policy for exact limits.
Oversized Checked Baggage
Oversized Checked Baggage refers to cases that can be checked on the airlines but could incur oversize fees. Typically oversize fees can be applied to cases between 50-100 lbs and between 63-126 inches overall. Overall dimensions of the case are determined by adding the length, width and height together. Always check your airline’s specific policy, as size and weight limits can vary by carrier and route.
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Proven in demanding programs

Trusted by teams at government and enterprise organizations

Organizations shown represent customers whose teams have purchased from Specialty Cases.

  • BAE Systems
  • Boeing
  • CACI
  • FEMA
  • Google
  • Idaho National Laboratory
  • Johns Hopkins
  • Lockheed Martin
  • Sacramento County
  • US Department of Defense
  • US Homeland Security

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