Vabink 4"x25' Flexible Aluminum Duct for HVAC, Dryer Vent, Air Intake and Exhaust. Two Stainless Steel Clamps Included Variable fan speed controller 120 volts suitable for duct size of

suitable for duct size of 12" diameter

Clamping Range: 3

Made of 100% stainless steel

Maximum 350 Watts

3-wire 10 feet power cord with 3-Prong US type plug and pigtail end

Vabink 4"x25' Flexible Aluminum Duct for HVAC, Dryer Vent, Air Intake and Exhaust. Two Stainless Steel Clamps Included Variable fan speed controller 120 volts suitable for duct size of4 inch (100 mm) in diameter and 25 feet in length. Strong and flexible duct: 3 layer aluminum foil laminate ducting with built in steel wire spiral structure. Duct can be shortened for various applications and installed easily for dryer vent, kitchen, bathroom, grow room and vent exhaust etc. Temperature range for duct applications: 18C~85C (0~185F). Two stainless steel clamps included in each pack.