a storage locker constructed of recyclable thermoplastic that utilizes insertion tabs and sockets molded into the sides , top , bottom , front and side panels for permanent interlocking without the need of conventional fasteners . the storage locker is assembled on site by inserting the tabs of the appropriate panel into the socket receptacles of an adjoining panel . assembly of a basic locker requires snap attachment of the side walls to the top and bottom panel . a front frame , preassembly with a hinged door panel , is snap attached to the structure to complete the assembly wherein the structure is available for mounting directly to a wall . for a stand alone locker assembly , a perforated rear panel is available for attachment to the rear of the locker by use of locker pins . the rear panel provides aeration and allows various hook placement for hanging items . shelves are available in either fixed or adjustable disposition . sides , top , and bottom panels include provisions for attaching additional lockers in a stacked or gang configuration .