Heavy 12 gauge shelves are enclosed on 3 sides, 48” high above the deck in sturdy 1-1/2” angle iron corners and top trim. Mesh sides for greater visibility and air circulation. 2 swivel, 2 rigid 6” x 2” polyurethane casters with 3600 lbs. capacity. Available with flush edges or 1-1/2" retaining lips. Overall height 57” for flush shelves, 58-1/2" for lipped shelves.