Carries the Underwriter's Laboratories Classification. In the fire endurance test, products are subjected to fire at temperatures of 1,550ºF (for 1/2 hour Classification). Half-hour fire tested. Modular files stack on top of each other up to four high. Each file has label holder and tubular key lock for extra security; full extension drawer glides for ease of use. Accommodates letter size folders. .99 cu. ft. capacity. Exterior: 16-17/32w x 18-1/2d x 14-1/4h. Interior: 12-19/32w x 13-3/8d x 10-1/8h. Manufacturer's one-year limited warranty/lifetime after-fire replacement guarantee. May required special delivery arrangements. Shpg. wt. 71 lbs.