TEMPERED HARDBOARD BONDED TO A PARTICLEBOARD CORE BUILT TO WITHSTAND RUGGED TREATMENT. SMOOTH HARDWOOD EDGES RESIST MOISTURE. WON'T WARP OR SPLINTER. ADJUSTABLE HEIGHT LEGS FEATURE REMOVABLE DUPLEX KNOCKOUTS ON FRONT AND REAR FOR INSTALLATION OF EITHER A HARD WIRED ELECTRICAL OUTLET OR AN OPTIONAL PLUG-IN OUTLET THAT EASILY SCREWS INTO PLACE WITH NO WIRING NECESSARY. STEEL PARTS ARE GRAY POWDER COATED. BENCH STRINGER COMES WITH MOUNTING HARDWARE TO ASSEMBLE LEGS TO THE BENCH TOP.