1. Constructed of sturdy 18-gauge (1mm) CRS steel, with 1-1/2 (38-mm) of insulating air space for fire resistance 2. Galvanized steel shelves direct spills to back and bottom of a leak-proof 51mm sump. 3. Durable lead-free epoxy/polyester powder-coat finish provides excellent chemical resistance capacity. 4. 3-point stainless steel bullet latching system makes it work safely. Comply with OSHA 29 CFR 1910.106 and NFPA CODE 30.