GROW1 40-inch Belt-Driven Greenhouse Exhaust Fan with Shutter is a pre-wired exhaust ventilation fan with a listed airflow of 19,117 CFM. The supplied specifications list 120V operation and 9A current. Match the fan with appropriately sized intake openings and compatible controls for your greenhouse.

Greenhouse air exchange

This belt-driven model includes a shutter and moves air out of the greenhouse while replacement air enters through planned intakes. HAF circulation fans serve a separate purpose by moving air within the structure.

Fan specifications

• Brand: GROW1
• Supplier model: 981000; store SKU: DL981000
• Nominal fan size: 40 inches
• Listed airflow: 19,117 CFM
• Voltage: 120V
• Listed current: 9A
• Belt-driven and pre-wired, with shutter
• Stated fan dimensions: 39⅜ × 39⅜ × 15¾ inches
• UPC: 850039327827

Each-unit shipping information

• Weight: 85 lb
• Length: 39.25 inches
• Width: 15.6 inches
• Height: 39.6 inches

The supplier lists the fan dimensions and each-unit shipping dimensions separately. Neither should be treated as a confirmed rough-opening specification. Verify the mounting opening, actual frame dimensions, clearances, and wiring requirements before installation. Pre-wired does not establish plug type or controller compatibility.

Plan intake airflow and light control

The supplied airflow rating does not specify test pressure. Confirm airflow performance at the resistance expected in your installation; screens, louvers, light traps, and restricted intakes can reduce airflow. For light-deprivation greenhouses, plan light-blocking ventilation openings and perimeter sealing as part of the complete system. The shutter alone is not presented as a blackout guarantee. Follow the manufacturer's installation and maintenance instructions.