AC Infinity - Flexible Four-Layer Ducting, 25 ft long, 12" Diameter Elongated and a 2-door shutter that

and a 2-door shutter that blocks attic air from flowing into your home when the fan is not in use

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leakage “shut-in” tests

clothing and more

AC Infinity - Flexible Four-Layer Ducting, 25 ft long, 12" Diameter Elongated and a 2-door shutter that[shortdesc] Ducting Size 12 in. (10. 2 cm) Length 25 ft Outer Layer PVC Thermoplastic Inner Material Aluminum Foil [ shortdesc] PRODUCT DESCRIPTION This ducting is designed for various ventilation, circulation, and heating cooling transfer applications. It features four layer protection, making it more durable and resistant to leaks than single layer designs. The internal layer is made of heavy duty dual aluminum foil that is fire flame resistant. Its