{"product_id":"national-mfg-n184-572-mortise-spring-hinge-4x4-dull-brass","title":"National Mfg N184-572 Mortise Spring Hinge 4x4 Dull Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NATIONAL MFG\/SPECTRUM BRANDS HHI N184-572 is a mortise spring hinge designed for self-closing door applications in residential and light commercial settings. Measuring 4 inches by 4 inches, this hinge uses an internal spring mechanism to automatically return a door to the closed position after each use. It ships with mounting screws included and features a dull brass finish for a traditional, low-sheen appearance. Licensed carpenters, finish contractors, and experienced door installers are the primary installers of this hardware type.\u003c\/p\u003e\u003cp\u003eThis mortise spring hinge fits standard interior and exterior door frames that accept a 4-inch by 4-inch mortise hinge profile. It is well suited for residential entry points, utility rooms, and commercial corridor doors where codes or building requirements call for self-closing function. The dull brass finish coordinates with similarly finished door hardware. Each package contains one hinge with screws, sold as a single-pack unit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eInternal spring mechanism provides automatic self-closing door action\u003c\/li\u003e\n\u003cli\u003e4 inches x 4 inches mortise profile fits standard door preparations\u003c\/li\u003e\n\u003cli\u003eDull brass finish delivers a traditional, matte appearance\u003c\/li\u003e\n\u003cli\u003eMounting screws included — no separate hardware required\u003c\/li\u003e\n\u003cli\u003eSingle-pack format for targeted single-door replacement or new installs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-install mortise spring hinge for standard residential and light commercial doors requiring a 4-inch by 4-inch mortise hinge cutout.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by a finish carpenter or general contractor using a chisel, mallet, and screwdriver or drill driver. Ensure the door is properly supported and the mortise pocket is correctly sized before seating the hinge leaf. Adjust spring tension only per the manufacturer guidance provided with the hinge, and verify the door swings and latches correctly before finalizing the installation. Follow applicable local building codes for self-closing door requirements in fire-rated or egress-path applications.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinge Size\u003c\/strong\u003e: 4 inches x 4 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\u003ePackage Quantity\u003c\/strong\u003e: 1 hinge per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Mounting screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.66 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: N184-572\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NATIONAL HARDWARE","offers":[{"title":"Default Title","offer_id":51564299944242,"sku":"N184-572","price":60.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f49086fd854615a1a61b06fe6d16cb26.jpg?v=1786516890","url":"https:\/\/voomisupply.com\/products\/national-mfg-n184-572-mortise-spring-hinge-4x4-dull-brass","provider":"Voomi Supply","version":"1.0","type":"link"}