T9-DB4, 4 in. Round In line Vent duct Booster.

Product Description

T9-DB4, 4 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 continious 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., 80 CFM, 30 watts, .3 amp.

Cross Reference: T9-MCM4

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.