Professional Grade Products

Professional Grade Products 9800395 Shutter Exhaust Fan for Garage Shed Pole Barn Hydroponic Ventilation, 434 CFM, 8"

Shutter mounted exhaust fans are widely used for ventilating stores, offices, factories, shops and farm buildings. They exhaust when needed and then the shutter automatically closes to stop infiltrati..

Professional Grade Products 9800395 Shutter Exhaust Fan for Garage Shed Pole Barn Hydroponic Ventilation, 434 CFM, 8"

Shutter mounted exhaust fans are widely used for ventilating stores, offices, factories, shops and farm buildings. They exhaust when needed and then the shutter automatically closes to stop infiltrati..

Professional Grade Products 9800512 Metal Shutter Exhaust Fan for Garage Shed Pole Barn Hydroponic Ventilation, 10"

Shutter mounted exhaust fans are widely used for ventilating stores, offices, factories, shops and farm buildings. They exhaust when needed and then the shutter automatically closes to stop infiltrati..