RKI Underbody Truck Box 30x24x24 H Series 14 Gauge Black Steel Model # H302424 Pull Out Drawer Rubber extrusions along the uprights M Series Rubber extrusions along the uprights for extra protection Full Yes Requires Mounting Kit Yes Warranty Limited Lifetime Chevrolet Silverado 1500 Yes Chevrolet Silverado 2500 3500 Yes Ford F 150 Yes Ford F 250 F 350 Yes GMC Sierra 1500 Yes GMC Sierra 2500 3500 Yes RAM 1500 Yes RAM 2500 3500 Yes Toyota Tundra Yes Bed Length 5 ft 6 in Yes Bed Length 5 ft 7 in Yes Bed Length 5 ft 8 in Yes Bed Length 6 ft Yes Bed Length 6 ft 1 in Yes Bed Length 6 ft 2 in Yes Bed Length 6 ft 4 in Yes Bed Length 6 ft 5 in Yes Bed Length 6 ft 6 in Yes Bed Length 6 ft 7 in Yes Bed Length 6 ft 9 in Yes Bed Length 8 ft Yes Doors are horizontally hinged and constructed of 14 gauge cold rolled steel Door is held in the open position with heavy duty machine chains