Constructed of 18-gauge steel, the sides, top, bottom, and doors are double-walled with a 1-1/2-inch air space between walls Both vents, with 2-inch threaded fittings, have fire baffle and cap Each adjustable shelf can support 350 pounds High gloss powder finish with warning labels Grounding connection 3-point latch system 2-inch raised, leak proof door sill.