4-Inch Inline Duct Fan, 205 CFM, Temp Humidity Controller

4 inch inline duct fan boosts airflow to remove heat and humidity fast for cleaner, more stable indoor air. Designed for grow tent ventilation, hydroponics rooms, basements, kitchens, and equipment spaces, it pairs a quiet EC motor with a temperature and humidity controller for hands-off start/stop control. Compact, efficient, and easy to mount or hang, it’s built for continuous exhaust and ventilation where noise matters.

Use this inline exhaust fan to stabilize temperature and humidity swings that can stress plants, equipment, and stored items. The controller can start or stop the fan based on your set high/low temperature or humidity thresholds, helping you maintain consistent ventilation without constant checking. Speed is adjusted manually when needed, while the system handles automatic operation and alerts. Set it up once, fine-tune your environment, and keep fresh air moving—grab yours today.