The MMF Industries 221615103 Jumbo Fire-Retardant Steel Security Chest with Key Lock is constructed of durable steel and engineered with double-insulated walls to protect contents from fire damage. It is lab tested at 1550 degrees Fahrenheit for 15 minutes with paper media enclosed. The contents were charred, but legible. The chest holds file folders and 9-by-12-inch documents to lay flat in bottom. The chest includes a lock with two keys and two carrying handles for convenience. The sand-colored chest measures 12-2/3-by-10-19/20-by-4-inches (WxDxH).