JamStands Series Rolling Rack Stand. On stage, behind the board, or in the studio, sometimes you need your rack to be open and mobile. The JS-SRR100 Rolling Rack Stand easily accommodates, boasting a 12U-over-9U rack on casters, two of which lock to keep your rack from rolling away. The top section is angle-adjustable for convenience, and the frame is built from rugged steel for durability.SpecsRack Spaces: 12U Over 9UHeight: 45” (1145mm)Base Dimensions: 22” (W) x 21.5” (D) (559mm x 546mm)Weight: 25.8 lbs. (11.7 kg)