Cabinets are FM-approved. All interior and exterior surfaces including shelves are finished with blue epoxy powder coating giving superior protection against chemical attack. Shelf trays and bottom trays of HDPE and each adjustable 40 W x 143/4 in. D shelf is supported by four brackets and can support more than 500lb. Also includes four leveling legs. Legend Caution CORROSIVE in white. Construction specificationsAll Eagle corrosive and flammable-storage cabinets comply with OSHA 29 CFR 1910. 106d and NFPA Code 30 requirements. Constructed of 18 gauge cold-rolled steel sides top and bottom double-walled with 11/2 in. air space between walls and doors. Vents are equipped with flame arresters and removable 2 in. NPT steel plugs grounding connector is built-in. Equipped with 3-point key lock and 2 in. raised leak-proof door sill and high-gloss enamel door with red warning legend. For all cabinets unless otherwise specified subtract 3 in. from each dimension to get inside dimensio