418 Invisible Hinge

SOSS 418 Heavy-Duty Invisible Hinge, 1-3/4" Minimum Door Thickness, 4-5/8" Height, 3 Hour Fire-Rated, 1ea. Per Box SOSS® Invisible Hinge model #418 is for use in wood or metal applications that are 1-3/4″ thick. The model #418 is made of alloy steel. 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 #418 SOSS® Invisible Hinge can be used on hollow metal, sheet metal, tin clad, and steel composite swinging type fire doors and frames rated up to and including 3 hours. They can also be used on wood core doors and frames rated up to 20 minutes. Additionally, they can be used on wood/plastic composite doors and frames constructed with Georgia Pacific FS 1 or FS 2 banding for a rating up to and including 90 minutes. 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. Application Full Sized Entry, Metal, Wood Min. Material Thickness 1-3/4″ Fire Rating 90 / 180 Minutes Power Transfer No Closer No Counter Bored Screw Holes No Screws Included Wood and Machine Packaging 1 / Box = 1 Each Price Per Each