Details 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 demand more hinges. Machine screws are available for an additional charge. Additional Information Application Full Sized Entry, Metal, Wood Min. Material Thickness 2" Fire Rating 20 Minutes Power Transfer No Spring Closer No Counter Bored Screw Holes No Screws Included Wood Packaging 1 / Box = 1 Each Packages Per Container 1 Each Price Per Each Dimensions A 1-3/8" (34.93mm) B 1-1/16" (26.99mm) C 5-1/2" (139.70mm) D 1/2" (12.70mm) E 9/32" (7.15mm) F 2-15/16" (74.62mm) G 1/16" (1.59mm) H 1-63/64" (50.40mm) I 15/32" (11.91mm) Min. Matl. Thickness 2" (50.80mm) Wood Screw Sizes #12x1-1/2" (5.5x38mm) Soft Wood Pilot Hole No. 38 Hard Wood Pilot Hole No. 25 Machine Screw Sizes #12-24x1" Hinge Weight 3.15 lb. Don't forget to order a Router Template for this hinge to make sure it is routed perfectly for installation.