Ventilator, 4''6''8'' Pipe Kitchen Toilet Exhaust Fan Louver Exhaust Fan Air Ventilation Ceiling Booster Blower Metal Exhaust Fan ,Fast Wind Speed

Fluted on both ends to receive ducting Balanced metal blades are for boosting air supply and venting exhaust air Engineered for maximum boost with minimum noise Household applications: help to boost airflow in HVAC units to remove exhausts and odors from bathrooms and workshops and ventilate basements and attics, etc. Grow room applications: used as intake fan to bring fresh air into grow rooms.