Reddit reviews TerraBloom ECMF-100, 4" Inline Duct Fan with 0-100% Speed Controlled EC Motor, Metal Case, Energy Saving. For Ventilation Boosting, Heating, Humidity and Exhaust Blower For Grow Tents

TerraBloom EC duct fans are used in indoor grow facilities and vertical farms, heating and cooling transfer, commercial drying and air filtration applications. Our inline blowers can also create negative pressure environments, simulate wind, exhaust odors and smoke as well as intake fresh air from outdoorsBuilt with cutting edge brushless EC Motor and dual jet type blades, this blower delivers 160 CFM airflow rate using just 18 Watts at max speed. It translates into only $45 annual cost of 24/7 operation at max speed using $0.29 average cost per KWH. Our fans don’t “purge” or waste electricity at lower speedsOur EC fan gives you a unique flexibility of controls – choose any speed from 0 to 100% using the included variable speed controller without creating background noise or hum at low speeds. Or choose to upgrade to a wireless remote control (Model: ECMF-WR) or intelligent thermostat speed controller with temperature programming (Model: SC-ECMF). This fan also supports PWM and 0-10V controllers via 3.5mm audio portCoated aluminum housing resists rust, protects motor and blades from accidental damage and harsh elements to reduce maintenance in demanding applications. This fan has IPX4 ingress protection rating. This is fan is extremely compact and fits into spaces with minimal clearanceDuct Diameter: 4” (98mm) * Airflow: 160 CFM * Power 18W * Noise: 28-56 dBA * Pressure: 334 Pa * Bearings: Dual Ball * Size: 6.3 x 7.3 x 5.9 in. * ETL Listed * 2 Year Warranty