Features: * 3/4 in. steel strut and 5mm thick steel bar construction * Tough epoxy coat finish * Recommended fasteners are 3 in. or longer 5/16 in. lag screws mounted on to studs * Attach shelf using no.8 or larger rounded-head wood screw * Holds up to 1000 pounds per pair when mounted per manufacturer recommendations * Mounts directly to wall * Fasteners NOT included * 22 in. length * White What"s In The Box: * Knape & Vogt 208WH550 22-Inch L-Shaped Heavy Duty Extension Bracket, White