Fastcap T-Brace is the perfect way to create the illusion of a free floating shelf that is strong enough to support over 300 lbs. per pair. Ideal for new construction, but can be used in a remodeling application when an access hole is cut in the drywall for attachment. 1/4 to 3/8" steel, mounting holes on both sides. Black finish, 16" x 5" x 3/4" thick.