{"product_id":"3m-7100138820-fire-barrier-cast-in-device-3-inch-firestop","title":"3M 7100138820 Fire Barrier Cast-in Device 3 Inch Firestop","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe 3M 7100138820 is an intumescent fire barrier cast-in device designed to firestop 3-inch non-metallic pipe and conduit penetrations through fire-rated concrete floor assemblies. The device attaches directly to the concrete form prior to slab pour, creating a formed opening that remains accessible once the slab cures and forms are stripped. When exposed to fire, the intumescent material expands to seal the annular space around the penetrant, providing up to 3 hours of fire protection. It is installed by mechanical, electrical, and plumbing contractors working on new concrete slab construction.\u003c\/p\u003e\n\u003cp\u003eThis cast-in device is suited for use in commercial and residential construction where fire-rated concrete floor assemblies require through-penetration firestop protection for plastic pipe or non-metallic conduit. It is placed during the forming stage, before the concrete pour, which eliminates the need for a separate coring or patching step after construction. Mechanical, electrical, and plumbing penetrants are routed through the formed opening after the slab has cured and forms are removed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eIntumescent material expands under heat to seal around plastic pipe penetrations and limit fire spread\u003c\/li\u003e\n  \u003cli\u003eRated for up to 3 hours of fire protection in concrete floor assemblies\u003c\/li\u003e\n  \u003cli\u003eFits 3-inch non-metallic pipe and conduit penetrations\u003c\/li\u003e\n  \u003cli\u003eCast-in design attaches to form before concrete pour, eliminating post-pour coring\u003c\/li\u003e\n  \u003cli\u003eSupports routing of mechanical, electrical, or plumbing penetrants after slab cure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 3-inch non-metallic pipe and conduit penetrations through fire-rated concrete floor assemblies in new construction applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed mechanical, electrical, or plumbing contractors in coordination with concrete formwork crews. The device must be secured to the form before the concrete slab is poured; do not attempt to install after the slab has cured. Verify compliance with applicable fire and building codes, including IBC through-penetration firestop requirements, before installation. Always confirm the annular space and penetrant type match the device rating prior to use.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Size\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePenetration Type\u003c\/strong\u003e: Non-metallic pipe and conduit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFire Rating\u003c\/strong\u003e: Up to 3 hours\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\u003eWeight\u003c\/strong\u003e: 1.42 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: 12\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: 7100138820\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51344971071794,"sku":"7100138820","price":272.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310527946.jpg?v=1782046860","url":"https:\/\/voomisupply.com\/products\/3m-7100138820-fire-barrier-cast-in-device-3-inch-firestop","provider":"Voomi Supply","version":"1.0","type":"link"}