MMF Industries Security Chest,Fire-Retardant,13-1/2"x10-4/5"x4-3/10",Sand Security chest offers insulated, fire-retardant, solid double-wall steel construction to protect important documents, paperwork and other valuables from fire damage. Ideal for use at home, retail shops, or small businesses to protect important documents and heat-sensitive valuables. Design is fire-retardant to 750 degrees for 15 to 20 minutes. Security chest features a built-in lock with two keys and carrying handle.