These well designed Fire Extinguisher Cabinets are an industry first.  These Metal Fire Extinguisher Cabinets require only one tank, and the unique bracket design secures the fire rated sheet rock around the tank.  It meets  UL-1479 and is UL classified by Underwriters Laboratories Inc. and is for use in penetration firestop systems.  Modern Metal Products is the first to have this fire rating with this design.  These Fire Cabinets must be installed to our specific instructions or the rating will be void.  Refer to UL Fire Resistance Directory 1996 edition - WL7005.  Patent pending.