TerraBloom’s ECMF-100‑V2 is a 4-inch (100 mm) EC inline duct fan supplied with an 8‑speed digital controller. The 2026 model delivers a maximum 141 CFM of airflow while drawing only 18 W, equivalent to roughly 240 m³/h, and features an IP68 ingress rating with insulated electronics and motor. The EC drive supports smooth 0–100% speed adjustment without extra hum and accepts external PWM or 0–10 V control; multiple fans can be daisy‑chained via 3.5 mm TRRS leads. A rustproof polymer housing keeps weight low and resists corrosion. The unit is ETL listed to UL 507 and CSA C22.2 No. 113. Typical uses include intake or exhaust for compact grow tents and rooms where a 4-inch duct run is specified.

