19" universal equipment racks SRK8: 8-space rack (16" [20.5" with casters] x 20" x 18") Heavy-duty steel construction with fully enclosed sides Front and rear rack rails Compatible with U.S. and European screw thread sizes U.S. and European rack screws included Blank, single-space blank panel 3” (75mm) locking casters for easy transport and fixed installation 300lb (with casters), 450lb (without casters) of weight capacity Side perforations for passive ventilation Black brushed, anodized finish Compatible accessories (sold separately) include Samson SRK Rack Drawers and SRK Rack Shelves