18-gauge thick double-wall, welded steel with 1-1/2-in of insulating air space|Adjustable, patented SpillSlope® galvanized steel shelves direct spills to back and bottom of 2-in leakproof sump|3-point stainless steel bullet latching system|U-Loc handle with two keysaccepts optional padlock|Trilingual warning with Haz-Alert reflective labels