4-Inch Inline Duct Fan Kit, Carbon Filter, App Control

Inline duct fan kit boosts grow tent ventilation with consistent airflow to reduce stagnant-air odors and keep plants in a healthier environment. The 4-inch (101.6 mm) EC motor fan delivers up to 205 CFM (349 m³/h) with 0–10 speed control via PWM controller and smartphone app, so you can fine-tune airflow and monitor conditions without constant manual adjustments. Designed for indoor gardening, hydroponics, and small exhaust setups.

Built around an energy-efficient EC pure copper motor, this exhaust ventilation fan is designed to limit heat buildup during long runs and stay reliable in demanding indoor environments. Use it to maintain fresh airflow in grow tents, indoor gardens, hydroponic setups, or as general-purpose duct ventilation—especially where odors and fine particles tend to linger. Set your preferred speed, keep airflow stable, and spend less time troubleshooting poor circulation. Grab yours today and get your ventilation dialed in.