T/L - Triple Lock Aluminum Flexible Duct

A semi rigid and lightweight non-insulated air duct, Triple Lock (T/L) is manufactured by 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.