The AQ-R1500 duct cleaner uses a brush mounted to the tip of a rotating flexible shaft. While the operator feeds the rotating shaft assembly through the duct, a powerful scrubbing action easily loosens dust, dirt and debris. A high air-displacement vacuum connected to the duct removes deposits as they are loosened. The unit features a 3/4 hp (0.6 kW) drive motor and a belt switch to activate shaft rotation. Shafts and accessories are available for cleaning 4 to 18 in. (100 to 460 mm) diameter ducts and rectangular/square ducts of varying sizes.