The SKB 1SKB-R904U20 is a rugged and durable 4U Shock Mount Rack Case designed to provide maximum protection for sensitive rack-mounted equipment in demanding environments. Constructed with a roto-molded shell and featuring an internal 20" shock rack frame, this case isolates gear from impact and vibration using elastomeric shock absorbers at each corner. The case is ATA-rated and military-grade, making it ideal for touring, broadcasting, or industrial applications. It includes front and rear steel-threaded rails, recessed twist latches, molded-in handles, and gasket-sealed lids for added security and protection against dust and moisture. With its combination of strength, functionality, and ease of transport, the 1SKB-R904U20 ensures your equipment stays safe during transit and operation.