4 Inch 310 CFM Exhaust Duct Fan Quiet Vent Booster Blower Ventilation Exhaust Fan for Hydroponics, Grow Tent, Indoor Garden$$Garden & Patio

This 4-inch round duct fan adopts pure copper coil, higher power and longer service time. Double ball bearings, strong power. Cold rolled stator steel plate has good magnetic conductivity and faster running speed. Ip2x waterproof grade ensures that the machine maintains good performance in humid environment. Split design, detachable and washable, easy to install and clean. This 4 inch inline duct fan is a great option for grow tents, closet, storage rooms, kitchens, bathrooms, basements and more