Aluminum Pocket Style Sturdy all-aluminum center board has a lower pocket to hold and store the SDS binder and training booklets. Pocket is welded on for added strength. The .063" thick aluminum has scratch-resistant, powder-coated finish. Backboard is 30"h x 24"w with a Perma-Bond sign. The pocket extends out 4 1/8"d with inside dimensions 5 7/8"h x 23 ¼"w X 4"d and two dividers to separate the binder and booklets. Center board kit is available with 1 ½" SDS binder and 10 training booklets. Sold individually.