Note: This product is compressed by the manufacturer and then packaged for shipping purposes. To reach the specified length, the product needs to be unpackaged and stretched. A semi rigid and lightweight non-insulated air duct, Triple Lock (T/L) is using a dead soft aluminum strip which is spirally wound and mechanically joined together forming an air tight and leakproof triple lock seam. A self supporting and corrosive resistant ULC-S110 and UL181 Class 1 product is produced which provides excellent strength and flexibility, adaptable to any low to high pressure heating, ventilation and air conditioning system. Features: 10 inch x 10 Ft. Triple Lock Aluminum Flex Duct Home Heating Supplies Boiler Venting Z-Flex Venting.
