The Vents-US TT 250 EC is a 10-inch mixed-flow inline duct fan in the Turbo Tube EC series, built around an electronically commutated motor for high efficiency and controllable speed. It connects to 10 in (25.4 cm) round ducting and is rated up to 745 CFM at 0 in. w.g. (about 1,266 m³/h). The TT 250 EC operates on 120 V/60 Hz, draws about 170.6 W at peak per the series spec, and is ETL certified. A built-in speed control, long-life ball bearings, and a removable central body with mounting plate simplify installation and service. Typical uses include garage and general exhaust or air transfer where compact, quiet ventilation is required.