Middle Atlantic PTRK-1426MDK The PTRK-1426MDK 14U 26" Deep Portable Rack with Plexi Front Door from Middle Atlantic is a rugged portable rack with smooth-rolling 4inches casters and advanced cable-management features. It is constructed of fully-welded steel and will support up to 500 lbs of equipment. This model comes standard with wood top covered in graphite laminate, a plexi front door, and a solid rear door. The doors feature keyed locks. This unit also features 10-32 threaded 11-gauge rackrails and a durable textured black powder-coat finish