{"product_id":"national-marker-n100049-double-acting-spring-door-hinge","title":"National Marker N100049 Double-acting Spring Door Hinge","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NATIONAL MARKER N100049 is a double-acting spring hinge designed for swinging doors that require two-way access and self-closing operation. This 3-inch hinge features a cold-rolled steel construction with a satin brass finish. The tight pin is adjustable, allowing the installer to dial in the desired closing speed for the specific application. Mounting screws are included. This hinge suits residential and light commercial interior doors where hands-free, self-closing function is required, such as kitchen pass-through doors, saloon-style doors, and service corridor entries.\u003c\/p\u003e\n\u003cp\u003eThe N100049 is suited for swinging door installations where a door must open in both directions and return to a closed position automatically. Typical applications include restaurant kitchen doors, utility room entries, and commercial service doors. The adjustable closing speed makes it adaptable across a range of door weights and traffic levels. Installation requires only basic hand tools and the included hardware.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-acting spring mechanism allows doors to swing in both directions\u003c\/li\u003e\n  \u003cli\u003eSelf-closing action returns door to closed position automatically\u003c\/li\u003e\n  \u003cli\u003eAdjustable tight pin controls closing speed for different door weights and traffic conditions\u003c\/li\u003e\n  \u003cli\u003eCold-rolled steel construction with satin brass finish\u003c\/li\u003e\n  \u003cli\u003eMounting screws included for straightforward installation\u003c\/li\u003e\n  \u003cli\u003e3-inch hinge size suits standard interior swinging door applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard fit for residential and light commercial swinging door installations requiring double-acting spring hinge hardware. Corresponds to National catalog model V127.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a carpenter, general contractor, or qualified handyman. Power down any electrically operated door hardware before beginning work. Ensure the door frame and door blank are properly mortised or surface-prepped to accept the hinge leaf before fastening. Adjust the tight pin incrementally to achieve the desired closing speed, and test door swing in both directions before completing installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHinge Size\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cold-Rolled Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAction Type\u003c\/strong\u003e: Double-Acting Spring, Self-Closing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosing Speed\u003c\/strong\u003e: Adjustable via tight pin\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: 0.965 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: NATIONAL MARKER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: N100049\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NATIONAL MARKER","offers":[{"title":"Default Title","offer_id":51347133333810,"sku":"N100049","price":39.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310549965.jpg?v=1782098494","url":"https:\/\/voomisupply.com\/products\/national-marker-n100049-double-acting-spring-door-hinge","provider":"Voomi Supply","version":"1.0","type":"link"}