iPower 4 Inch 100 CFM Booster Fan Inline Duct Vent Blower with Variable Speed Controller Adjuster, Silver

Fan specification: diameter: 4inch; Air flow: 100 CFM; Speed: 2930 RPM; Voltage: 110/120V; Wattage: 12W; Noise level: 40 db.
Variable fan speed controller: it will correctly and precisely adjust the speed of your duct and inline fans. Durable 3-pole grounded plug construction, no extra wires to deal with.
Advantages of fan: superior balanced blades for long service life & quiet operation; Motor features a permanently lubricated bearing that operates quietly and requires no maintenance.
Application: help boost airflow in HVAC (heating, ventilation and air conditioning) units to remove exhausts and odors from grow rooms, kitchens, bathrooms, workshops, basements, attics etc.
Package including: 1 pack 4inch booster fan, 1 pack variable fan speed controller.