Controller, 4 ” 106 CFM Low-Noise Ventilation Exhaust Fan for Kitchen, Basements, Bathrooms, Attics and Grow Tents, Black - Simple Deluxe Inline Booster Duct Fan with Speed

• UPC   198401008203
• Safe and Durable: This fan has overheating protection, and if overheating is detected, the unit will automatically shut down. The quality steel housing and strong motor makes it sturdy and built to last quality steel. Adjustable Speed : With a variable speed controller on the power line, you can optimize airflow and noise levels to suit the desired application. Turn the knob to control the exhaust fan at different speeds. Efficient: With a diameter of 4 inches, speed of 2990 RPM and 106 CFM airflow, this air exhaust fan is lightweight enough for quich removal and easy installation in areas with little available space. Low Noise: Reduce the sound output to only 28 dB-no harm or disturb for your life. Superior balanced blades and centrifugal impeller for quiet operation and long service life. Wide Applications: The duct fan designed to boost airflow in HVAC systems, ventilate home spaces and use in grow tents as intake fans or exhaust fan. It can be used in bathrooms, kitchens, workshops, basements, attics and etc.