AIRTAP T4, Quiet Register Booster Fan with Thermostat 10-Speed Control, Heating
AIRTAP Series. The motor houses dual ball bearings that are rated at 67,000 hours and allow the fan system to be mounted horizontally or vertically. Quiet PWM DC-Motor. Fits ONLY 4 x 10 in. Airflow 120 CFM 120 CFM 120 CFM 120 CFM 160 CFM 160 CFM.