The 3 drawer filing cabinet features heavy-duty steel construction with 100% Gypsum insulation that's encased in an internal grid of galvanized welded steel wire. It's water resistant and has a 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, colors, and it's guaranteed by a limited lifetime warranty.