Hvac Z-FLEX Triple Lock Aluminum Flexible Duct | 4″ X 50 Ft. Triple Lock Aluminum Flex 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.