420US19 Finish: Black E-Coat Features: -90/180 Min UL Fire Rating, 1 each. -Additionally, they can be used on wood core doors. -Specifically designed with square edges for metal doors. -Use at least one fire-rated hinge for every 20" of door height. -Used on hollow metal, sheet metal, tin clad and steel composite swinging type fire doors. -Not to be used on a door that normally is held open. Hinge Type: -Invisible/Concealed. Number of Mounting Holes: -8. Style: -Modern. Dimensions: Overall Product Weight: -3.85 lbs.
