Vertical Bunk Bracket Dimpled - 7-1/2". Adjustable bunk bracket. Used when mounting bunks on edge. Ideal for small craft trailers. A single bracket will allow the bunk board to pivot with the hull as the boat is loaded. Double brackets hold the board in place.. Features:. 7-1/2". Slot 7/16" x 4-3/8". 11 gauge materical, galvanized finish. Dimpled style