4" Inch Round Spiral Air Duct, Adjustable 12" to 22" Inch Long Telescopic Duct, Straight Rigid Galvanized Steel Dryer Vent Hose Extension, Warm Air Exhaust Threaded Metal Duct

Spiral telescopic air ducts are manufactured with intended use in public, residential and industrial ventilation systems. The external duct features a spiral design, while the internal moving component consists of a single sheet metal piece.
Manufactured from galvanized steel, which offers excellent protection against rust and oxidation. Rubber gasket is made out of EPDM rubber.
Duct diameter: Ø3.94" Inches. Duct length: 11.81" Inch extends to 21.65" Inches. One end features female fit opening, while the other end male fit with a rubber gasket for a secure and leak-free connection.
The female end of the duct connects to a male connector, and the extendable male fitting duct is then attached afterward to simplify the installation process. It is advisable to begin the process with the duct in its shortened form.
Telescopic ducts can help optimize space utilization in tight or compact areas. They can be used in construction projects to provide temporary ventilation for enclosed spaces until permanent systems are installed. In commercial settings, telescopic ducts are used in larger HVAC systems to distribute conditioned air or exhaust fumes in manufacturing facilities, warehouses, and office spaces.

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