{"product_id":"3m-7100138823-fire-barrier-cast-in-device-4-inch","title":"3M 7100138823 Fire Barrier Cast-in Device 4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe 3M 7100138823 is an intumescent cast-in firestop device designed to protect 4-inch metallic penetrations through fire-rated concrete floor assemblies. It is installed by attaching directly to the forming system before the concrete slab is poured. Once the slab cures and forms are removed, the device creates a finished sleeve opening through which mechanical, electrical, or plumbing penetrants can be routed. The intumescent material expands under heat, sealing the annular space around the penetrant to provide up to 3-hour fire protection. This device is installed by licensed contractors working under fire-stopping, mechanical, plumbing, or electrical scopes.\u003c\/p\u003e\n\u003cp\u003eThis cast-in device is suited for new construction and major renovation projects where fire-rated concrete floor assemblies require through-penetration firestop solutions for 4-inch metallic pipe or conduit. It is particularly useful on multi-story commercial and residential construction sites where the firestop sleeve must be positioned before the slab pour, eliminating the need for core drilling or retrofit firestop collars after the fact. Sold individually, with a minimum order quantity of 6 units per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eIntumescent construction expands under heat to seal metallic penetrations and block fire and smoke passage\u003c\/li\u003e\n  \u003cli\u003eDesigned for 4-inch metallic pipe or conduit penetrations through concrete floor assemblies\u003c\/li\u003e\n  \u003cli\u003eProvides up to 3-hour fire-resistance rating\u003c\/li\u003e\n  \u003cli\u003ePre-pour installation — attaches directly to the form before the concrete slab is poured, no core drilling required\u003c\/li\u003e\n  \u003cli\u003eAccommodates mechanical, electrical, and plumbing penetrants routed after slab cure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 4-inch metallic penetrations through fire-rated concrete floor assemblies in commercial and residential construction applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified contractors prior to concrete placement — the device is secured to the form deck at the required penetration location before the slab is poured. After the slab cures and forms are stripped, the opening is ready for the penetrant to be routed through. Verify the installation assembly and fire-resistance rating against the applicable building code and local authority having jurisdiction (AHJ) requirements before installation. Do not modify the device or apply coatings that could impair intumescent function.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePenetration Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePenetration Type\u003c\/strong\u003e: Metallic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAssembly Type\u003c\/strong\u003e: Fire-rated concrete floor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFire Protection Rating\u003c\/strong\u003e: Up to 3 hours\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.74 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 00051115165429\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: 3M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7100138823\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51347768541490,"sku":"7100138823","price":213.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310527941.jpg?v=1782113298","url":"https:\/\/voomisupply.com\/products\/3m-7100138823-fire-barrier-cast-in-device-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}