AC Infinity CLOUDLINE H4, Quiet 4” Inline Duct Fan with Speed Controller, Humidity Proof IP65-Rated Ventilation Exhaust Fan in Grow Tents, Mushroom Fruiting Chambers for Propagation and Fungiculture

Specially designed for mushroom growing to quietly ventilate grow spaces and help control indoor climate levels. IP65-rated to ensure performance in high-humidity spaces while resisting dust, debris, and moisture. Includes a fan speed controller with precise 10-level control for exact airflow and CO2 buildup prevention. EC motor with PWM control enables quiet and energy-efficient performance for consistent fresh air exchange. Duct Size: 4" | Dimensions: 6.9 x 11.9 x 7.4 in. | Airflow: 212 CFM | Noise: 27 dBA | Bearings: Dual Ball