Grow1 Belt Driven 1 HP Greenhouse Fan With Shutter, 40". 19,117 CFM. 40" Fan

Move serious air through your greenhouse with the Grow1 1 HP Belt-Driven Greenhouse Fan. This 40-inch exhaust fan delivers a powerful 19,117 CFM, making it a strong choice for ventilating large greenhouses, warehouses, and commercial grow spaces where heat and humidity build up fast. The belt-driven design runs on standard 120-volt power and arrives pre-wired, so installation is straightforward and you can get air moving quickly. An integrated shutter opens when the fan runs and closes when it shuts off, helping keep pests, debris, and outside air out of your growing environment while maintaining consistent airflow and temperature control for healthier plants. Dimensions: 39 3/8in x 39 3/8in x 15 3/4in Features: Voltage: 120V Current: 9 AMP Airflow: 19117CFM