The 2 drawer vertical file cabinet is made from heavy-duty steel and it has Gypsum insulation that's encased in an internal grid of 14-gauge galvanized welded steel wire. 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, colors, and it's guaranteed by a limited lifetime warranty.