{"product_id":"shurtape-pc-857-ul-181b-fx-printed-waterproof-hvac-duct-tape-strong","title":"Shurtape PC 857 UL 181B-FX Printed Waterproof HVAC Duct Tape - Strong","description":"\u003cp\u003eIn this review the Shurtape PC 857 UL 181B-FX printed cloth HVAC duct tape earns its place for professionals and serious DIYers who need a reliable, code-compliant tape to seal Class 1 flex duct. The single biggest reason to buy is its UL 181B-FX listing clearly printed on the tape, which removes guesswork during installs and inspections while still delivering high holding power and excellent shear strength on rough or not fully clean surfaces.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL 181B-FX Listed:\u003c\/strong\u003e The listing printed on the tape makes identification during inspection fast and ensures it meets the standards required for Class 1 flex duct installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof cloth construction:\u003c\/strong\u003e The 14 mil printed cloth backing provides a waterproof barrier and durable surface that resists tearing in typical HVAC work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh holding power:\u003c\/strong\u003e Adhesive formulation grips even rough or not fully clean surfaces to maintain a secure seam and long-lasting joins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior shear strength:\u003c\/strong\u003e Designed to resist shear forces on seams and joins so ducts stay sealed under normal system stresses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to tear:\u003c\/strong\u003e The cloth tape can be ripped by hand for quick use on the job without cutting tools, speeding installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tape is aimed at HVAC installers, contractors and maintenance technicians who need a UL-listed solution for sealing, seaming and joining Class 1 flex duct. It is especially useful on jobs where surfaces may be a bit rough or dirty and the technician still needs reliable adhesion and a waterproof finish.\u003c\/p\u003e\n\u003cp\u003eIt is less necessary for casual household repairs where UL listing and printed identification are not required; homeowners who only need general-purpose duct tape for non-HVAC tasks could choose a simpler, lower-cost tape.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh adhesion and stickiness that customers report holds well even in colder conditions.\u003c\/li\u003e\n\u003cli\u003ePrinted UL 181B-FX marking simplifies code compliance and inspection verification.\u003c\/li\u003e\n\u003cli\u003eStrong, cloth-backed 14 mil construction with good shear strength for seams and joins.\u003c\/li\u003e\n\u003cli\u003eEasy to tear by hand for faster, tool-free application on site.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePriced for professional use, so some users may find value for money mixed compared with general-purpose tapes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eShurtape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePrinted waterproof cloth HVAC duct tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eListing\u003c\/td\u003e\n\u003ctd\u003eUL 181B-FX Listed (printed on tape)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e14 mil (cloth backing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e72 mm x 55 meters (one roll)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\/Print\u003c\/td\u003e\n\u003ctd\u003eSilver metal printed with listing text\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Shurtape PC 857 is a solid, professional-grade HVAC tape for anyone who needs a UL 181B-FX listed solution that sticks to rough surfaces and holds seams under stress. Its printed listing, waterproof cloth backing and easy tearability make it good value for contractors and technicians who require dependable performance and clear identification for inspections.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tape suitable for sealing Class 1 flex duct?\u003c\/strong\u003e\u003cbr\u003eYes. It is UL 181B-FX listed and designed specifically to seal, seam and join Class 1 flex duct.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it stick to rough or slightly dirty surfaces?\u003c\/strong\u003e\u003cbr\u003eYes. The adhesive is formulated for high holding power even when surfaces are rougher or not fully clean.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the tape be torn by hand?\u003c\/strong\u003e\u003cbr\u003eYes. The cloth backing provides easy tearability so installers can rip lengths without scissors.\u003c\/p\u003e","brand":"Shurtape","offers":[{"title":"Default Title","offer_id":48187452752091,"sku":"B01M7SKKH0","price":37.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71Nl_zfgGdL._SL1000.jpg?v=1769438495","url":"https:\/\/gearmusthave.com\/products\/shurtape-pc-857-ul-181b-fx-printed-waterproof-hvac-duct-tape-strong","provider":"GearMustHave","version":"1.0","type":"link"}