Model 220FR Fire Rated Invisible Hinge
SOSS® Invisible Hinge model #220FR is for use in wood or metal applications. This full size door style hinge will provide superior appearance and durability. Our Hinges are found in many applications where flush fit, compact size and smooth operation are necessary features. SOSS® Invisible Hinges open a full 180° and are a single action hinge. The Underwriters Laboratories labeled the model #220FR SOSS® Invisible Hinge can be used on hollow metal , sheet metal, tin clad, steel composite or wood core swinging type fire doors and frames with a 20 minute rating.
Use at least one fire rated hinge for every 20" of door height or portion thereof, or one hinge for every 60 lbs., or fraction thereof, whichever calculation demands more hinges.