The FireKing file cabinet is made from heavy-duty steel and it has Gypsum insulation that's reinforced by a lattice of galvanized welded steel wire. It is water resistant and 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, Sand shown. Quality guaranteed by a limited lifetime warranty.