{"product_id":"soss-418us26d-fire-rated-invisible-hinge-satin-chrome","title":"Soss 418US26D Fire Rated Invisible Hinge Satin Chrome","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SOSS 418US26D is a heavy-duty, fire-rated invisible hinge designed for commercial and residential doors requiring a clean, concealed appearance. Manufactured from alloy steel with a satin chrome finish, this hinge installs completely within the door edge and frame, leaving no exposed hardware when the door is closed. It is sized for 1.75-inch doors and measures 1.125 inches wide by 4.609 inches long, making it suitable for solid-core wood or metal doors found in fire-rated assemblies. Finish carpenters, millwork installers, and commercial door hardware specialists are the primary tradespeople who install this product.\u003c\/p\u003e\u003cp\u003eThis hinge is used in applications where surface-mounted hinges are undesirable, including high-end residential entries, office suites, hospitality interiors, and fire-rated corridor doors. Its fire-rated designation makes it appropriate for use in door assemblies required to meet fire door labeling standards. The heavy-duty alloy steel construction supports substantial door weight while maintaining the flush, invisible profile that architects and designers specify for premium installations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCompletely invisible when door is closed — no exposed barrel or leaves\u003c\/li\u003e\n\u003cli\u003eFire-rated construction suitable for labeled fire door assemblies\u003c\/li\u003e\n\u003cli\u003eHeavy-duty alloy steel body for high-cycle durability\u003c\/li\u003e\n\u003cli\u003eSatin chrome finish (US26D) for corrosion resistance and low-glare appearance\u003c\/li\u003e\n\u003cli\u003eSized for 1.75-inch door thickness\u003c\/li\u003e\n\u003cli\u003eSold individually (each)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation invisible hinge for 1.75-inch solid-core wood or metal doors in fire-rated and non-fire-rated assemblies requiring concealed hardware.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires precise mortising into both the door edge and the door frame jamb using a router or dedicated SOSS hinge template. This work is typically performed by a finish carpenter, commercial door installer, or licensed door hardware specialist. Verify that the door assembly and frame are rated to accept fire-rated hardware before installation, and confirm compliance with applicable fire door standards such as NFPA 80. Do not install on doors exceeding the rated weight capacity for this hinge model.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinge Width\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinge Length\u003c\/strong\u003e: 4.609 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor Thickness\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Chrome (US26D)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Rating\u003c\/strong\u003e: Fire Rated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 2.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 5.67 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 5.04 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SOSS \/ UIP ALLEGION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 418US26D\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOSS","offers":[{"title":"Default Title","offer_id":51558124257586,"sku":"418US26D","price":288.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/300819af45b402bff246ff4299012277.jpg?v=1786404086","url":"https:\/\/voomisupply.com\/products\/soss-418us26d-fire-rated-invisible-hinge-satin-chrome","provider":"Voomi Supply","version":"1.0","type":"link"}