Hurricane Pro Shutter Exhaust Fan 24 in Si The 20-inch prop covers a

The 20-inch prop covers a wide area of the room

Safe for beneficial insects and predatory mites

at 55% or 62%

Dimensions: 10"D x 14

If combining with other nutrients

Hurricane Pro Shutter Exhaust Fan 24 in Si The 20-inch prop covers aHurricane Pro 24 in shutter exhaust fan The Hurricane Pro 24 in fan pulls hot, stale, humid air out of a room fast, moving roughly 3,300 CFM. Six automatic shutters open with airflow and close to block backdrafts when the fan is off. An aluminum frame, shutters, and aluminum galvanized steel propeller resist rust in humid rooms. A fully enclosed 115V motor keeps out dust and moisture. Reliable exhaust for greenhouses, grow rooms, and warehouses