Audio Dynamics SP-18 18U Space ATA Shock Proof AMP Rack Flight Case for 19" Rack with Foldout Table & Heavy-Duty Wheel Casters 18 space shock proof road case, 20" usable depth, removable front & rear lids 1" thick high quality polyethylene provides very efficient shock protection Plywood construction, ABS black finish, 8 heavy duty zinc recessed butterflies 4 heavy duty zinc recessed handles with thick padded grip, doubled angle aluminum extrusions 12 gauge front & back EIA tapped steel rack rails (10/32), removable front and rear lids