The Gator Shock Mount Rack is made for your expensive synth modules, samplers, and other high-end audio gear with hard drives. Features mil-spec Polyethylene, threaded steel rack rails, rubber mounted shock absorbers, and adjustable rear (side) rack rails. Lightweight polyethylene construction Independent rubber shock absorbers at each corner 360 Degree air ventilation around equipment 7mm Threaded field replaceable zinc plated rack rails Adjustable interior sliding support on each side of rack adjusts front to back as well as up