This new 4-inch four-layer aluminium ducting is a 25-foot ventilation exhaust option for setups that need flexible air routing. It is suited to buyers looking for ducting for exhaust or general ventilation use, especially when a longer run and bendable design may be helpful during installation. The aluminium construction and listed four-layer build are key buying details from the listing. Free shipping is included, which may be useful when comparing total cost. If you are matching existing ventilation components, confirm the 4-inch size and overall 25-foot length fit your project before purchase. Check the listing for full details. Flexible 4-Inch Four-Layer Aluminium Ducting, 25-Feet Long, Ventilation Exhaust. Color: Black, Condition: New. Listed at 19.99 USD. Ducting AC Infinity, Flexible 4-Inch Four-Layer Aluminium Ducting, 25-Feet Long Designed for ventilation applications including HVAC, dryer, grow rooms and tents. Four layer design makes it more durable and resistant to leaks, tears, and cuts. Steel-wire spiral structure is flexible and easy-to-install in hard to reach places. Constructed of Aluminum and thermoplastic, tube can be shortened for various applications. Ducting Size: 4” | Length: 25 feet | Includes two stainless steel 4" duct clamps 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 outer layer utilizes dual PVC thermoplastic that protects the aluminum from cuts and tears while stopping leakage. Each duct tube is held together by an internal steel-wire spiral that is flexible and easy to install in hard to reach places. The ducting can be shortened by cutting the tube to fit various applications. Includes two stainless steel duct clamps. Applications Primarily used with duct fan systems in various air circulation and ventilation projects including hydroponic grow rooms and tents, bathrooms and attics, heating and cooling transportation, and other installations. It is also used to cool AV equipment rooms, closets, racks, and cabinets. FRIENDLY SERVICE Contact us by email support (a) acinfinity.com or send us a message through ebay if you have any questions, and we'll be happy to help. FAST SHIPPING We ship out all orders from California within 1 business day of payment. Orders are shipped with UPS or USPS, and include tracking info. FREE RETURNS If you're not happy with your purchase for any reason, please contact us to receive a prepaid return label - Return shipping is absolutely FREE. Copyright © 2020 AC Infinity Inc. All rights reserved.Ducting AC Infinity, Flexible 4-Inch Four-Layer Aluminium Ducting, 25-Feet Long Designed for ventilation applications including HVAC, dryer, grow rooms and tents. Four layer design makes it more durable and resistant to leaks, tears, and cuts. Steel-wire spiral structure is flexible and easy-to-install in hard to reach places. Constructed of Aluminum and thermoplastic, tube can be shortened for various applications. Ducting Size: 4” | Length: 25 feet | Includes two stainless steel 4" duct clamps 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 outer layer utilizes dual PVC thermoplastic that protects the aluminum from cuts and tears while stopping leakage. Each duct tube is held together by an internal steel-wire spiral that is flexible and easy to install in hard to reach places. The ducting can be shortened by cutting the tube to fit various applications. Includes two stainless steel duct clamps. Applications Primarily used with duct fan systems in various air circulation and ventilation projects including hydroponic grow rooms and tents, bathrooms and attics, heating and cooling transportation, and other installations. It is also used to cool AV equipment rooms, closets, racks, and cabinets. FRIENDLY SERVICE Contact us by email support (a) acinfinity.com or send us a message through ebay if you have any questions, and we'll be happy to help. FAST SHIPPING We ship out all orders from California within 1 business day of payment. Orders are shipped with UPS or USPS, and include tracking info. FREE RETURNS If you're not happy with your purchase for any reason, please contact us to receive a prepaid return label - Return shipping is absolutely FREE. Copyright © 2020 AC Infinity Inc. All rights reserved.