shelving plastic pallets plastic boxes SHELVING - Federal Steel Equipment & materials handling Boltless Shelving: Shelves can easily be rearranged and all component parts installed without dismantling. 'INTERLOCK' is completely assembled in an upright position. Additional floor space for erection is not required. Double-faced shelving units may be converted to single faced units by simply removing shelves from one face; no additional parts to buy. This shelving provides the flexibility necessary for today’s rapidly expanding libraries. It is compatible with existing types of stack, yet ranges may be lengthened, shortened, removed or relocated without inconvenience. Double-faced shelving units may be converted to single faced units by simply removing shelves from one face; no additional parts to buy.