National 4 In. Satin Nickel 1/4 In. Radius Spring Door Hinge Saddle Valves Applications include quickly locating hot

Applications include quickly locating hot terminals in receptacles

window wells

ul coded for flex duct & ul 181b-fx 82p4 listed

provides maximum insulating power

Operates best with 100 lb

National 4 In. Satin Nickel 1/4 In. Radius Spring Door Hinge Saddle Valves Applications include quickly locating hotCatalog 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.