SKB-R904U20 4U Shock Mount Rack

Product #3106 | SKU 1SKB-R904U20 | SKB
Usually ships in 8 - 12 weeks what does this mean?
Our Price $1,049.00
Usually ships in 8 - 12 weeks what does this mean?
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Usually ships in 8 - 12 weeks. Deliver to Auckland for $102.00 Change location
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Wellington Out of stock. Pickup in 8 - 12 weeks
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Related Products


  • Standard 19" rack
  • Water resistant
  • Elastomer shock absorbers
  • Mount hardware in racks


The SKB R904U20 4U Roto Shock Rack features a 50.8 cm deep rack frame installed in a roto moulded tough shell with an integrally moulded valance that eliminates the metal valance on the outside of the case, coupled with a rubber gasket on both the front and rear doors for water resistant protection. The integrated moulded valance, ergonomic handles, and recessed, heavy-duty twist latches allow these cases to meet most ATA and military specifications.

An internal frame mounted on adjustable Elastomer shock absorbers on all eight corners. These shocks are designed to control the effects of shock and vibration on three axes. The "sway" space around the internal frame provides natural air conditioning. This is very important for delicate audio equipment. This case is half the weight of traditional wooden cases.

This SKB-R904U20 Roto Shock Rack case has the Roto X pattern and is stackable within the series.


  • Standard 19" rack width as per EIA standards with 4 space rack height
  • Meets most ATA and Military specifications
  • Water resistant case
  • Internal frame mounted on adjustable Elastomer shock absorbers on all eight corners
  • Mounting hardware in the racks is easy with the SKB rack rail and provided hardware


Material High molecular weight Roto moulded polyethylene
Type of Closure Heavy duty twist latches
Exterior Dimensions 70.49 x 69.85 x 39.69 cm (WxDxH)
Interior Dimensions 48.26 x 50.8 x 17.78 cm (WxDxH)
Rackable Mount Depth: 58.42 cm
**Front Rail to Rear Rail:**50.8 cm
Lid Depth: 7.62 cm
Shock Absorbent Yes
Rails Front & rear
Accommodates Audio monitors, mixers and equipment with a rack mount available
Carrying/Transport Options Moulded carry handles
Weight 18.6 kg

In The Box

  • SKB-R904U20 4U Shock Mount Rack
  • Mounting hardware


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  • Product: SKB-R904U20 4U Shock Mount Rack
  • Manufacturer: SKB
  • Model: R904U20
  • SKU: 1SKB-R904U20
  • RM Product #: 3106

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