{"product_id":"4-1-2-in-metal-door-spring-hinge-4-5","title":"4-1\/2 in. Metal Door Spring Hinge","description":"\u003cp\u003eA spring hinge replaces a standard butt hinge and returns the door to the closed position on its own, using a coiled spring housed inside the barrel. Tension is set after installation by winding the spring with a hex key and dropping a locking pin into the barrel, so the closing force can be tuned to the weight of the door and the resistance of the latch.\u003c\/p\u003e\n\u003cp\u003eThis size is the common commercial leaf dimension used on hollow metal doors and frames with square-corner mortises. Spring hinges are normally installed in sets, with the remaining hinge locations filled by matching plain-bearing hinges, or with two or three spring hinges on heavier leaves that need more closing power.\u003c\/p\u003e\n\u003cp\u003eSelf-closing hinges are the usual way to make a door latch every time without hanging a surface-mounted closer on it, which keeps the hardware out of sight on stairwell, corridor and utility openings.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSpring-loaded barrel returns the door to the closed position without a surface closer\u003c\/li\u003e\n\u003cli\u003eClosing tension adjusted after hanging with a hex wrench and locking pin\u003c\/li\u003e\n\u003cli\u003eSquare-corner leaves suited to mortised hollow metal doors and frames\u003c\/li\u003e\n\u003cli\u003eStandard leaf pattern allows use alongside conventional butt hinges in the same opening\u003c\/li\u003e\n\u003cli\u003eCan be installed in multiples on one leaf to increase closing force on heavier doors\u003c\/li\u003e\n\u003cli\u003eSold by the pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHollow metal doors in commercial corridors and stairwells\u003c\/li\u003e\n\u003cli\u003eUtility, mechanical and storage room doors that must latch behind the user\u003c\/li\u003e\n\u003cli\u003eApartment and multi-family entry doors requiring self-closing hardware\u003c\/li\u003e\n\u003cli\u003eReplacing worn or failed spring hinges on existing metal openings\u003c\/li\u003e\n\u003cli\u003eGarage-to-house passage doors\u003c\/li\u003e\n\u003cli\u003eOpenings where a surface-mounted closer is not wanted\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Spring hinge (self-closing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Size:\u003c\/strong\u003e 4-1\/2 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Style:\u003c\/strong\u003e Square corner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntended Door:\u003c\/strong\u003e Metal door and frame\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Hex key tension adjustment with locking pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold By:\u003c\/strong\u003e Pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize\u003c\/th\u003e\n\u003ctd\u003e4-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55112693645651,"sku":"4.5","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/4-1-2-in-metal-door-spring-hinge-4-5.webp?v=1790734490","url":"https:\/\/arch-9365.myshopify.com\/products\/4-1-2-in-metal-door-spring-hinge-4-5","provider":"ARCH","version":"1.0","type":"link"}