{"product_id":"quietflex-18mr6-flexible-duct-18-in-x-5-ft-r-6-0-10-pack","title":"Quietflex 18MR6 Flexible Duct 18 in X 5 Ft R-6.0 10 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe QUIETFLEX 18MR6 is an R-6.0 insulated flexible duct section measuring 18 inches in diameter and 5 feet in length. Each box contains 10 pieces, providing 50 feet of flexible duct per order. This product is used in forced-air HVAC distribution systems to connect supply and return air plenums, trunk lines, and diffusers. The R-6.0 insulation rating helps limit heat gain and heat loss across unconditioned spaces such as attics and crawlspaces. Licensed HVAC technicians and sheet metal contractors are the primary installers of this product.\u003c\/p\u003e\n\u003cp\u003eThis flexible duct is suited for residential and light commercial forced-air systems. It is commonly routed through attic spaces, dropped ceilings, and mechanical rooms to deliver conditioned air from the air handler or furnace to individual supply registers. The 18-inch diameter accommodates larger trunk or main branch runs in systems with higher airflow requirements. Sold in boxes of 10 five-foot sections, making it practical for jobs requiring multiple shorter runs or precise fitment around obstructions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eR-6.0 insulation value limits thermal loss in unconditioned spaces\u003c\/li\u003e\n  \u003cli\u003e18-inch diameter fits larger supply and return branch or trunk runs\u003c\/li\u003e\n  \u003cli\u003e5-foot sections allow precise routing and fewer field cuts\u003c\/li\u003e\n  \u003cli\u003eBox quantity of 10 pieces yields 50 feet of duct per order\u003c\/li\u003e\n  \u003cli\u003eFlexible construction allows routing around structural and mechanical obstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and new-installation flexible duct for residential and light commercial forced-air HVAC distribution systems requiring an 18-inch diameter flexible duct with R-6.0 insulation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes, including SMACNA guidelines and local jurisdiction requirements. Power down and lock out the air handler or furnace before connecting or disconnecting duct sections. Secure connections at both ends with listed duct straps and approved mastic or metal-backed tape rated for duct applications. Avoid compressing or kinking the duct, as reduced cross-section significantly increases static pressure and reduces airflow.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Per Piece\u003c\/strong\u003e: 5 feet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation R-Value\u003c\/strong\u003e: R-6.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePieces Per Box\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Length Per Box\u003c\/strong\u003e: 50 feet\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: QUIETFLEX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 18MR6\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QUIETFLEX","offers":[{"title":"Default Title","offer_id":51347923108146,"sku":"18MR6","price":62.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554742.jpg?v=1782116138","url":"https:\/\/voomisupply.com\/products\/quietflex-18mr6-flexible-duct-18-in-x-5-ft-r-6-0-10-pack","provider":"Voomi Supply","version":"1.0","type":"link"}