{"product_id":"lambro-industries-418-flexible-duct-4-in-x-8-ft-aluminum","title":"Lambro Industries 418 Flexible Duct 4 in X 8 Ft Aluminum","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe LAMBRO INDUSTRIES 418 is a 4-inch diameter, 8-foot length aluminum film laminated flexible duct designed for low-pressure air distribution in residential and light commercial HVAC systems. Constructed with an aluminum film laminate outer layer, this flex duct provides a lightweight, pliable connector between rigid ductwork and supply or return air boots. It is intended for use as a transition or short-run connector and is not a substitute for rigid metal duct in main trunk or high-velocity applications. HVAC technicians and installers handle this product during new construction, retrofit, and equipment replacement work.\u003c\/p\u003e\u003cp\u003eThe 418 flexible duct is suited for residential forced-air systems, including gas furnace, heat pump, and central air conditioning installations. It is commonly used to connect branch runs from a plenum or trunk line to individual supply registers. The 8-foot length gives installers enough material to route around framing members and make directional changes without over-stretching the duct. Each unit is sold and packaged individually for straightforward jobsite use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-inch diameter fits standard residential supply branch fittings\u003c\/li\u003e\n\u003cli\u003e8-foot length allows flexible routing without splicing short sections\u003c\/li\u003e\n\u003cli\u003eAluminum film laminated construction provides a lightweight, semi-rigid outer shell\u003c\/li\u003e\n\u003cli\u003ePliable core supports bending and repositioning during installation\u003c\/li\u003e\n\u003cli\u003eNot a substitute for rigid metal duct — intended for connector and short-run applications\u003c\/li\u003e\n\u003cli\u003eIndividual carton packaging keeps product clean and undamaged on the jobsite\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and general-purpose flexible duct connector for residential and light commercial forced-air HVAC systems using 4-inch diameter branch duct fittings.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician in accordance with SMACNA guidelines and applicable local mechanical codes. Power down and lock out the air handling unit before connecting or disconnecting ductwork. Avoid sharp bends, compression, or over-extension of the flex duct, as these conditions reduce airflow and system efficiency. Secure both ends with approved clamps or draw bands and seal joints with listed duct tape or mastic sealant.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 8 feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction\u003c\/strong\u003e: Aluminum Film Laminated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 12 per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LAMBRO INDUSTRIES\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 418\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LAMBRO INDUSTRIES","offers":[{"title":"Default Title","offer_id":51525378965810,"sku":"418","price":187.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ea8b41b7d80b318e4eb7d55a5aa9e707.jpg?v=1785472211","url":"https:\/\/voomisupply.com\/products\/lambro-industries-418-flexible-duct-4-in-x-8-ft-aluminum","provider":"Voomi Supply","version":"1.0","type":"link"}