4.5" x 4.5" Self Closing Spring Hinges With Adjustable Spring For Commercial Hollow Metal and Solid Core Wood Doors
A spring hinge is a type of self closing hinge. The automatic closing function is accomplished through the built in spring within the barrel of the door hinge. Each time the door is swung open, the spring within the door hinge barrel gains tension, as the pedestrian passes through the door, the tension releases, powering the door to automatically close. It is important to note that self closing hinges in no way replace overhead surface mounted traditional door closers. Self closing hinges should only be used on standard height commercial doors (3'-0" x 6'-8" or 3'-0" x 7'-0") with very low traffic. If the commercial door receives standard, high, or extreme traffic, the American Top Hinge brand heavy duty ball bearing hinge should be used with a Liberty Door Closer brand surface mount door closer. Shop self closing spring hinges today and receive FAST, FREE shipping!