Ducting is constructed from top quality aluminum foils to offer flexibility and give protection to against breaking throughout installation.
Not only does the duct act as in intake and exhaust piping for active-cooled fixtures and reflectors, but in addition stores and dissipates heat at a steady rate, which reduces room temperature fluctuations.

Product Benefits
>Steel wire space: 20mm
>Diameter of steel wire: Ø 1.0mm
>This 4-inch ducting fits any standard 4-inch inline fan.
>3-layer thickness: Aluminum Foil + PET + Aluminum Foil.
>Helically shaped and internally crimped galvanized steel strip.
>Interlocking steel strips to form an air tight and leak proof system.

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Ducting Material: 6 inches (diameter) x 23 feet (length) when fully extended， High quality aluminum (High Temperature Resistant & Corrosion Resistant & Long Lasting); Clamps Material: Stainless steel (Rustproof & Corrosion Resistant & Heavy Duty).
Ducting Feature 1: Three-layer Thickness (Aluminum Foil + PET + Aluminum Foil): Flame-retardant coating. Thermal Endurance: Temperature range from -22 to 266 Fahrenheit.
Ducting Feature 2: Built-in steel wire for reinforcement Flexible ventilation ducting constructed from High quality flame-retardant aluminum and built-in corrosion-resistant wire helix for reinforcement and and long lasting performance.
Ducting Feature 3: Flexible length for exhaust fan blower / inline fan; quick and easy to set up.
Application Scenarios: Highest for Heating Ventilation & Air Conditioning (HVAC), Kitchens, Bathrooms, Greenhouses, Grow Rooms, Grow Tents, and the like.