4" x 25', Silver, MEA Air Duct, R-6.0. UL 181/ULC S-110M/Class 1 Air Duct, 2-Ply Polyester Laminated Inner Core Provides Outstanding Resistance & Durability, Fiberglass Reinforced Metalized Outer Jacket, Extremely Strong, Will Not Unravel, Suitable For Use With Heating, Ventilation & Air Conditioning Systems.
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4" x 25', Silver, MEA Air Duct, R-6.0. UL 181/ULC S-110M/Class 1 Air Duct, 2-Ply Polyester Laminated Inner Core Provides Outstanding Resistance & Durability, Fiberglass Reinforced Metalized Outer Jacket, Extremely Strong, Will Not Unravel, Suitable For Use With Heating, Ventilation & Air Conditioning Systems.
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