For oversized documents, binders, storage boxes and end-tab filing. UL 1-Hour Class 350 Fire Rating. Oven-dried Gypsum Insulation. Field-Replaceable Steel Panels. Exterior Mounted Handles. High-Security UL listed Medeco® Lock. Made in the USA. Lifetime Limited Warranty. Free replacement after fire guarantee. 19-1/4 in. depth. 620 lb.