{"product_id":"national-mfg-n184-556-mortise-spring-hinge-3-5in-dull-brass","title":"National Mfg N184-556 Mortise Spring Hinge 3.5in Dull Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NATIONAL MFG\/SPECTRUM BRANDS HHI N184-556 is a mortise spring hinge designed for doors in residential and light commercial applications. Measuring 3.5 inches by 3.5 inches, this hinge features a built-in spring mechanism that automatically returns a door to the closed position after each use. The dull brass finish provides a traditional, low-sheen appearance suited to standard interior door hardware. Mounting screws are included. Licensed contractors, carpenters, and experienced installers work with this type of hinge in both new construction and retrofit settings.\u003c\/p\u003e\u003cp\u003eThis mortise spring hinge is well suited for interior doors that require self-closing function, including utility rooms, mechanical rooms, and code-required fire-rated door assemblies where a self-closing mechanism is mandated. The package includes one hinge with screws. The 3.5-inch leaf size fits standard interior door preparations common in residential and light commercial construction.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuilt-in spring mechanism provides automatic door closing after each use\u003c\/li\u003e\n\u003cli\u003e3.5 inches by 3.5 inches leaf size fits standard mortise door preparations\u003c\/li\u003e\n\u003cli\u003eDull brass finish for a traditional, low-sheen appearance\u003c\/li\u003e\n\u003cli\u003eIncludes mounting screws for complete installation\u003c\/li\u003e\n\u003cli\u003eMortise-style installation for a flush, clean fit within the door edge\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation mortise spring hinge for standard 3.5-inch door hinge preparations on interior residential and light commercial doors.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by a licensed carpenter, door hardware installer, or experienced contractor. The door should be fully removed or secured before mortise work begins. A sharp chisel and drill are standard tools for mortise preparation. Verify local building codes when installing self-closing hinges on fire-rated door assemblies, as the International Fire Code may specify closure force and speed requirements.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinge Size\u003c\/strong\u003e: 3.5 inches x 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Dull Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinge Type\u003c\/strong\u003e: Mortise Spring Hinge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Mounting Screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1 Hinge Per Pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.44 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: NATIONAL MFG\/SPECTRUM BRANDS HHI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: N184-556\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NATIONAL HARDWARE","offers":[{"title":"Default Title","offer_id":51559739523378,"sku":"N184-556","price":56.71,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ca56c06427acbf04be616c59a8333fba.jpg?v=1786439638","url":"https:\/\/voomisupply.com\/products\/national-mfg-n184-556-mortise-spring-hinge-3-5in-dull-brass","provider":"Voomi Supply","version":"1.0","type":"link"}