National 3.5 In. Satin Nickel 1/4 In. Radius Spring Door Hinge Cove the ceramic non-stick coating makes

the ceramic non-stick coating makes cleanup easy

Low battery warning

Safety cables are required on California installs

or in any application where the membrane is protected from long-term ultraviolet exposure

National 3.5 In. Satin Nickel 1/4 In. Radius Spring Door Hinge Cove the ceramic non-stick coating makesCatalog model No. V521 series. Cold rolled steel. Designed for hanging self closing doors in basements, stairways, garages, and entrances. Can be used in residential, commercial, and apartment buildings. Hinge is UL approved for fire doors. Closing speed is adjustable. Fits standard hinge cutout. 1 4" radius, round corner automatic door closing spring hinge.