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 and slat-type sides allow visibility and air circulation, while solid sides offer more durability. 2 swivel, 2 rigid 6” x 2” polyurethane casters with 3600 lbs. capacity. Shelves are available with a 1-1/2” retaining lip or flush front edge. Overall Height 57”, 58-1/2" with lipped shelves.