{"product_id":"atco-031-r8_7x50ft-flexible-air-duct-r8-7in-x-50ft","title":"Atco 031-R8_7X50FT Flexible Air Duct R8 7in X 50ft","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ATCO RUBBER PRODUCTS 031-R8_7X50FT is a Class 1 insulated flexible air duct designed for residential and commercial HVAC distribution systems. It features a 2-ply polyester inner core, a thick blanket of fiberglass insulation rated at R8, and a silver metalized polyester outer jacket. The duct is rated for air velocities up to 5000 FPM and handles positive static pressure up to 6 inches WG per UL-181. The encapsulated wire helix prevents unraveling when the duct is cut to length, and the smooth inner core reduces friction loss for lower operating costs. HVAC technicians and sheet metal contractors install this duct in forced-air supply and return systems.\u003c\/p\u003e\n\u003cp\u003eThis flexible duct is suited for residential and light commercial HVAC applications where a pre-insulated, ready-to-install solution is needed. The 7-inch diameter and 50-foot length make it appropriate for main branch runs and longer lateral runs off a plenum or trunk line. The metalized polyester jacket resists tearing and puncture during installation and routine service. It meets UL 181, NFPA 90A and 90B, IMC, IRC, UMC 10-1, HUD, and ASTM C-518 standards, making it code-acceptable across most jurisdictions that reference these model codes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eR8 thick blanket fiberglass insulation for high thermal efficiency and reduced heat gain or loss\u003c\/li\u003e\n  \u003cli\u003eAir-tight 2-ply polyester inner core eliminates fiberglass erosion into the air stream\u003c\/li\u003e\n  \u003cli\u003eEncapsulated wire helix holds shape when cut, allowing quick field sizing without unraveling\u003c\/li\u003e\n  \u003cli\u003eSmooth inner core lowers friction loss and reduces system operating costs\u003c\/li\u003e\n  \u003cli\u003eTough metalized polyester jacket resists tearing and puncture for low maintenance in service\u003c\/li\u003e\n  \u003cli\u003eRated to 6 inches WG positive and 1 inch WG negative pressure per UL-181\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation flexible duct for residential and commercial forced-air HVAC systems requiring a 7-inch diameter, R8-insulated, Class 1 flexible air duct per UL 181.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with IMC, IRC, or the locally adopted mechanical code. Power down and lock out the air handling unit before making duct connections. Secure each end with an approved UL 181B-listed draw band or metal clamp and seal with listed mastic or foil tape rated for flexible duct applications. Avoid sharp bends that reduce the inner diameter, and support the duct at intervals specified by the applicable mechanical code to prevent sagging.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 50 feet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation Type\u003c\/strong\u003e: Thick Blanket Fiberglass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation R-Value\u003c\/strong\u003e: R8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore Material\u003c\/strong\u003e: 2-Ply Polyester\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJacket Material\u003c\/strong\u003e: Silver Metalized Polyester\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Air Velocity\u003c\/strong\u003e: 5000 FPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Positive Pressure\u003c\/strong\u003e: 6 inches WG per UL-181\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Negative Pressure\u003c\/strong\u003e: 1 inch WG per UL-181\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Rating (Continuous)\u003c\/strong\u003e: -20 to 180 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Rating (Intermittent)\u003c\/strong\u003e: -20 to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlame Spread Index\u003c\/strong\u003e: 25 maximum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmoke Developed Index\u003c\/strong\u003e: 50 maximum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuct Type\u003c\/strong\u003e: Class 1, Insulated, Flexible, Plain End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplicable Standards\u003c\/strong\u003e: UL 181, NFPA 90A, NFPA 90B, IMC, IRC, UMC 10-1, HUD, ASTM C-518\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: ATCO RUBBER PRODUCTS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 031-R8_7X50FT\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ATCO RUBBER PRODUCTS","offers":[{"title":"Default Title","offer_id":51284000080178,"sku":"031-R8_7X50FT","price":172.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309276809.jpg?v=1781065599","url":"https:\/\/voomisupply.com\/products\/atco-031-r8_7x50ft-flexible-air-duct-r8-7in-x-50ft","provider":"Voomi Supply","version":"1.0","type":"link"}