The four drawer file cabinet features heavy-gauge steel construction with 100% Gypsum insulation that's reinforced by an internal grid of galvanized, welded steel wire. It's been tested against 1 hour of exterior fire exposure at 1700ºF, a 2000ºF explosion, and a 30 FT drop. It's available in different sizes with your choice of color, Champagne shown. Quality backed by a limited lifetime warranty.