iPower GLFANXINLINEEXPC4 4 Inch 118 CFM Inline Duct Fan with Variable Speed Controller Ventilation, Quiet HVAC Exhaust Blower, 4" Fan & Speed, Black

Specifications: Diameter: 4inch; Air flow: 118 CFM; Wattage: 28W; Noise level: 30db. 110V standard household plug; Pre-wired 5.9 Feet power cord. Max Ambient Temp is 104?/ 40?
Details: One control switch for 3 settings: variable speed, OFF, HIGH, MED, LOW. To avoid the risk of burning out the fan motor, controller does not adjust below 50%
Easy installation: Removable duct ends with locking screws for quick removal and easy maintenance and you can put it in any angle and any end, a cord length of 6 feet for hassle free setup
Low noise level: Durable plastic fan housing and blades, ventilation fan with the features of low noise(35dB), large air volume, high static pressure; Variable speed controller for easy fan speed adjustment
Versatile applications: Suitable for industrial, household and horticulture ventilation applications for air clean and temperature control, such as bathroom, washroom, store, office, garden and etc