The Vents-US TT 100 is the 4-inch model in the Turbo Tube mixed‑flow inline fan series for residential and light commercial ventilation. It features a two‑speed AC motor with a built‑in high/low/off switch and long‑life ball bearings. On 120 V/60 Hz, the TT 100 is rated at a maximum 105 CFM (approximately 178 m³/h) and is designed for standard 100 mm (4 in) ducting. The compact plastic housing includes an integrated mounting plate and a removable, rotatable fan body to simplify installation, wiring, and cleaning. Typical uses include utility areas, small grow tents, and other tight spaces requiring quiet, continuous airflow. The official listing notes ETL certification, IPX4 splash protection, and manufacturer support resources.