{"product_id":"quietflex-14kmr8-flexible-duct-14-in-r-8-foil-jacket-25-ft","title":"Quietflex 14KMR8 Flexible Duct 14 in R-8 Foil Jacket 25 Ft","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe QUIETFLEX 14KMR8 is a 14-inch flexible duct designed for supply and return air applications in residential and commercial HVAC systems. Built with an R-8 insulation value and a foil outer jacket, it delivers strong thermal performance while resisting moisture and tearing. The 25-foot length suits a wide range of trunk-to-register runs without splicing. The flexible inner core supports smooth, low-turbulence airflow, reducing noise during system operation. Licensed HVAC technicians install this duct during new construction, renovation, and equipment changeout work where high-efficiency air distribution is required.\u003c\/p\u003e\n\u003cp\u003eThis flexible duct is suited for both residential and light commercial forced-air systems. It performs well in attic, crawlspace, and mechanical room installations where thermal losses through ductwork must be controlled. The R-8 insulation rating makes it a practical choice in climate zones with strict energy code requirements for duct insulation. Supply and return air runs are both supported by this product type.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e14-inch inner diameter supports high-volume airflow in main distribution runs\u003c\/li\u003e\n  \u003cli\u003eR-8 insulation value meets energy code requirements in most climate zones\u003c\/li\u003e\n  \u003cli\u003eFoil outer jacket resists moisture and physical abrasion\u003c\/li\u003e\n  \u003cli\u003e25-foot continuous length reduces the number of joints and connection points\u003c\/li\u003e\n  \u003cli\u003eFlexible inner core allows routing around structural obstructions\u003c\/li\u003e\n  \u003cli\u003eSuitable for both supply and return air duct configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style flexible duct replacement for residential and commercial forced-air HVAC systems requiring 14-inch diameter insulated duct with R-8 thermal performance.\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 energy codes. Power down the air handling unit and close the disconnect before making duct connections. Minimize sharp bends in the flexible inner core to avoid restricting airflow or creating pressure drop; support the duct at recommended intervals to prevent sagging. Seal all connections with approved mastic or metal tape rated for flexible duct applications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Diameter\u003c\/strong\u003e: 14 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 25 feet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation R-Value\u003c\/strong\u003e: R-8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJacket Type\u003c\/strong\u003e: Foil\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: 14KMR8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QUIETFLEX","offers":[{"title":"Default Title","offer_id":51346798936370,"sku":"14KMR8","price":222.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310552635.png?v=1782090764","url":"https:\/\/voomisupply.com\/products\/quietflex-14kmr8-flexible-duct-14-in-r-8-foil-jacket-25-ft","provider":"Voomi Supply","version":"1.0","type":"link"}