National Hardware 1.5 in. H x 0.75 in. W x 0.04 in. D Zinc-Plated Steel Inside Corner Brace - 5703442
Reinforce right angle joints with the National Hardware 1-1/2 inch x 3/4 inch zinc plated steel corner braces, which feature a double wide design and steel construction for stability. Countersunk screw holes allow easy installation with number 5 flat head Phillips screws.