Overview Product Description T9-MCM6 also known as T9-DB6, 6 in. Round In line Vent duct Booster. Designed to be installed at any angle of the duct of an under-ventilated room to increase either hot or cold air flow, 115v continuous operation. Control options (not included) Manual off / on Variable speed control. Automatic Control: Wire to furnace fan, Wire to fan switch, Wire to sail switch, Wire to a pressure switch, wire to a thermostat. length 6 in., 250 CFM, 30 watts, .35 amp. Please note that this unit may come with a 120V plug which can be removed to accomplish various wiring accommodations. Some may require an electrical expert and should not be attempted. Product Videos Custom Field Product Reviews