Vents-US TT 250 is a 10-inch inline mixed-flow duct fan from the Turbo Tube series, designed for supply or exhaust ventilation in residential and light commercial applications. It uses a two-speed, single-phase motor with a built-in low/high selector and includes a mounting plate and power cord for straightforward installation. At 0 in. w.g., the TT 250 delivers up to 880 CFM (about 1,495 m³/h) through a 10 in (25.4 cm) round duct. Noise is rated around 4.5 sones on high and 2.5 sones on low. The plastic housing is UV-resistant with IPX4 ingress protection, and the unit carries ETL certification. Typical uses include workshops, basements, and grow rooms where compact, reliable inline airflow is required.