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4U SKB Roto Shock Rack (20 RD)

Dimensions (in inches)
Interior: 19 x 20 x 7
Exterior: 29 x 27.25 x 16

Product Options

Part Number: 1SKB-R904U20
Availability: Ships in 3-5 days

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4U SKB Roto Shock Rack (20 RD)

Additional Options
SKB Rackmount Hardware - 12 each screws and clips
SKB Shipping Label Plate
3SKB-SA Extra Shock absorber kit - set of 8
Caster Cart Board for 20
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List Price: $1,096.00
Your Price: $599.99
You save: 45%
Additional Price:

SKB’s 4U Roto Shockmount Rack Cases provide added protection for sensitive gear. With an internal frame mounted on adjustable elastomer shock absorbers on all eight corners, this revolutionary design controls the effects of shock and vibration on all three axes. The "sway" space around the internal frame provides natural air conditioning — very important for delicate equipment. Recognizing that these cases may be used in extremely rugged environments by the military, field-replacing the standard shocks with other available elastomeric shocks can easily accommodate multiple weight bearing requirements. Front and rear rack rails are threaded; mounting equipment in the cases is easy. These SKB racks are significantly lighter than the old wood racks, but still offer maximum protection.

WARNING: This product can expose you to chemicals including carbon black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to
Inch | MM
Part No. 1SKB-R904U20
Product Name 4U SKB Roto Shock Rack (20 RD)
Availability Ships in 3-5 days
Rack U 04U
Rack Depth 20.00
Rack Lid Depth 2.25
Weight Capacity 150.00
Interior Length 19.00
Interior Width 20.00
Interior Height 7.00
Removable Lid Yes
Exterior Length 29.00
Exterior Width 27.25
Exterior Height 16.00
Material Linear Low Density Polyethylene (LLDPE)
Manufacturing Process Roto Molded
Interior Empty
Color Black
Water Resistance Waterproof
Handles Molded ergonomic handles
Latches Recessed military twist latches
Wheels No Wheels
Security Options N/A
Ata Rated Yes
Weight 40.00
Special Features Stackable, field replaceable shocks

Estimate Shipping

This shipping estimate is based on this product only and does not include other products which may be in your shopping cart. Also note that the shipping weight can change based on the currently selected product options on the right.

Ship Weight: 65


Million Mile Guaranty

SKB Hard Case Products are fully warranted against defects in materials and craftsmanship for the life of the case to the original owner. That means, if your case breaks, SKB will repair or replace it at no cost to you for as long as you own the case. Most locks, handles and wheels have been made field replaceable and will be supplied to you at no charge. To request parts or a return authorization for damaged Industrial Cases and Racks, please contact our customer service department at (800) 783-0087. SKB Hard Cases are warranted for life to the original owner. Cases for rental purposes, modified or re-sold cases are not covered by this warranty.


All returns and exchanges are to be made within 10 days of receiving order.

Merchandise returns must be shipped, pre-paid, at the customer’s expense. All returned items must be in "as-new" condition, in their original packaging, with all accessories enclosed. The original packing slip must be included and the Return Merchandise Authorization (RMA) number must be visible on the outside of the shipping package. To obtain a RMA number, call our customer service department at 888.515.5255. You must be able to provide the following information: the quantity and item number of the product to be returned, the date of purchase, the invoice number, and the cost of the item. Discrepancies or missing information may result in delays or refusal of your refund. Merchandise returned to Cases By Source, Inc. without a RMA number will not be accepted. The issuance of a RMA number does not guarantee that a credit will be issued. 

If part of a product becomes defective, the entire item must be returned for credit or replacement within 10 days of the invoice date. A packing slip—with the item number(s) and a description of the defect—must be included in the package. At its discretion, Cases by Source, Inc. will repair or replace defective goods. Please Note: Following repair or replacement, defective goods will be returned to customers in the same box in which they were received by Cases By Source, Inc.

All merchandise returns—defective or otherwise—are subject to thorough inspection by a Cases By Source, Inc. representative. Merchandise credits are issued at the company’s discretion, based on the aforementioned requirements and instructions. A $25.00 re-boxing fee will be charged for credited products not returned in the original manufacturer's packaging.

All returned items are subject to a 15% restocking fee.* Some exceptions applied

Refunds will not be issued for custom case orders.

Refunds exclude shipping charges for returned items that are not defective.

Please allow 2-4 weeks for refunds to be processed and credited to your account. If your order was charged to a credit card, we will need your card number to process the refund (Orders placed online do not provide full disclosure of the card information.)

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