The 4 drawer fireproof file cabinet is made from heavy duty steel and it has 100% Gypsum insulation that is reinforced by a 1" x 2" lattice made of 14-gauge galvanized welded steel. It has a 1-hour class 350 fire rating, 30 ft. UL impact rating, and a 30 minute ETL fire rating for digital media. It's available in different sizes with your choice of color, Brown shown. Quality backed by a limited lifetime warranty.