Gladiator GAWP042PBY Wall Storage, 4' 12 inch high by 48 inch long panels Interlock for the ultimate flexibility in storage and organization For mounting over 1/2 in. To 3/4 in. Drywall on wood studs or directly to bare wood studs Rated load 50 lbs. Per sq ft. (Based on lab test of 200 lbs). once attached to wall studs, the panels provide sturdy structure to Hang heavy items Rated class a for residential interior use. Mounts on bare wood studs or drywall over wood studs The tongue and groove seamless appearance panel design locks panels together for easy installation