{"product_id":"3m-7100043891-aluminum-foil-tape-3-89-in-50-yd-silver","title":"3M 7100043891 Aluminum Foil Tape 3.89 in 50 Yd Silver","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe 3M 7100043891 is a dead soft aluminum foil tape engineered for duct sealing, insulation facing repairs, and general HVAC fabrication work. The 1.8 mil aluminum foil carrier is coated with a cold weather acrylic pressure-sensitive adhesive that bonds in low-temperature conditions where standard adhesives fail. The tape measures 3.89 inches wide and 50 yards long per roll, offering broad coverage for seam sealing and patching applications. It is hand tearable, which speeds up installation without the need for a dispenser or cutting tool. Licensed HVAC technicians, sheet metal workers, and mechanical insulation contractors are the primary installers of this product.\u003c\/p\u003e\n\u003cp\u003eThis tape is suited for residential and commercial HVAC ductwork, mechanical insulation jacketing, and vapor barrier repairs. Its cold weather adhesive makes it particularly useful for work performed in unconditioned spaces such as attics, crawlspaces, and equipment rooms during cooler months. The UL723 and ULC S102 flame and smoke classifications make it appropriate for use in applications where fire-rated materials are specified by code or project requirements.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.8 mil dead soft aluminum foil construction conforms easily to irregular surfaces\u003c\/li\u003e\n  \u003cli\u003eCold weather acrylic pressure-sensitive adhesive bonds in low-temperature environments\u003c\/li\u003e\n  \u003cli\u003eHand tearable — no dispenser or blade required during installation\u003c\/li\u003e\n  \u003cli\u003eUL723 Classified with a 5\/10 Flame\/Smoke Rating\u003c\/li\u003e\n  \u003cli\u003eULC S102 Classification with a 10\/0 Flame\/Smoke Rating\u003c\/li\u003e\n  \u003cli\u003e3.89 inch width provides broad coverage for duct seams and insulation repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and general-use foil tape for residential and commercial HVAC ductwork sealing, mechanical insulation jacketing repairs, and vapor barrier applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed HVAC technicians or mechanical insulation contractors. Before applying, ensure the substrate surface is clean, dry, and free of dust or oils to achieve full adhesive contact. When working on active duct systems, shut down the air handler or furnace before accessing ductwork to avoid pressurized air interference during tape application. Follow applicable mechanical codes including SMACNA duct sealing standards for fire-rated assembly requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTape Width\u003c\/strong\u003e: 3.89 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTape Length\u003c\/strong\u003e: 50 yards per roll\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFoil Thickness\u003c\/strong\u003e: 1.8 mil\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFoil Material\u003c\/strong\u003e: Dead soft aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdhesive Type\u003c\/strong\u003e: Cold weather acrylic pressure-sensitive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Roll\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 33.70 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFire Classification\u003c\/strong\u003e: UL723 (5\/10 Flame\/Smoke), ULC S102 (10\/0 Flame\/Smoke)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 051128960214\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: 7100043891\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51346711249202,"sku":"7100043891","price":463.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310530891.jpg?v=1782088119","url":"https:\/\/voomisupply.com\/products\/3m-7100043891-aluminum-foil-tape-3-89-in-50-yd-silver","provider":"Voomi Supply","version":"1.0","type":"link"}