National 4 In. Oil Rubbed Bronze 1/4 In. Radius Spring Door Hinge Category_Door Knobs & Hardware Dual ball bearing locking for

Dual ball bearing locking for maximum pry resistance

designed for convenient desk side waste management

voc compliant in all states

Flexible rubber formula won't crack

with contrasting plush trim

National 4 In. Oil Rubbed Bronze 1/4 In. Radius Spring Door Hinge Category_Door Knobs & Hardware Dual ball bearing locking forCatalog 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.