FEATURING AN ALL-WELDED CONSTRUCTION FOR LONG-LASTING DURABILITY THIS 18-GAUGE STEEL CABINET WITH 14-GAUGE STEEL DOORS HAS THREE SHELVES TWO OF WHICH ARE ADJUSTABLE TO SAFELY STORE UP TO 120-GALLONS OF FLAMMABLE LIQUIDS. THE DOUBLE-WALLED DESIGN ALLOWS FOR 1-1/2"" OF INSULATING AIR SPACE WHILE THE DUAL 2"" AIR VENTS CONNECT TO EXHAUST SYSTEMS TO MAINTAIN SAFE TEMPERATURES. THIS UNIT IS EQUIPPED WITH 4"" HINGES WITH STURDY BRASS PINS AND A SPILL-PROOF SILL FOR CONVENIENT SPILL MANAGEMENT.