TerraBloom’s ECMF-100-S2 is a 4-inch silenced inline duct fan designed for compact, low-noise ventilation. The S2 2026 model uses a brushless EC motor to deliver 141 CFM (about 240 m³/h) while drawing 18 W. Its EPP sound-insulated housing reduces noise and resists damage and corrosion. An included 8‑speed digital controller provides smooth 0–100% adjustment; the fan also supports external PWM and 0–10 V control and daisy‑chaining. Rated to IP68 with insulated electronics and motor, it is suited to demanding indoor ventilation uses. The unit measures approximately 22.2 × 9.6 × 7 inches and is ETL listed to UL 507 and CSA C22.2 No. 113. Mounting hardware is included. Duct connections are standard 4-inch (100 mm) for easy integration.

