Rolling ATA Style Polyethylene Case for Laptop or Mixer over 4-Space Rack Rugged polyethylene construction ATA style case 4U of rack rail for rack mount recording devices & disk drive Adjustable laptop compartment with no-slip web strap tie-downs Convoluted foam interior in lid Access hole between top & bottom compartments allow the laptop to be permanently connected to the recording gear Interior Rack : 19.25' x 7' x 17.5' Space Area Interior Rail : 17.5' To Back Interior Laptop : 17' x 12.5' x 2' Area Exterior Dimensions : 21.5' x 22.75' x 14.25' Weights : 23 lbs.