Double-wall 18-gauge welded steel construction with 1 1/2" air spaceDual 2" capped vents with flame arresters Full-height piano hinges open a full 180º for easy accessLocking handle with 3-point latch 2" high leak proof door sill All shelves are adjustable on 2 1/2" centres Adjustable levelling feet Tough corrosive-resistant finish Meets NFPA Code 30 and OSHA standard 1910 106 for storage of Class I, II and III liquids FM Approved10-year limited warranty