4'' 6'' 8" Low Noise Inline Duct Fan Kitchen Ventilation Bathroom Exhaust Booster For Grow Tent Ventilator Air Vent ,Energy-Efficient

Made of steel construction with powder coated baked paint.Solid and . Easy to install: Fluted on both ends to receive ducting. portable and lightweight and can be installed anywhere; Minimize Noise: the balanced blades design for minimize noise and vibration. the Motor with permanently lubricated bearing operates quietly. High Compalibility: this fan suit for various environment such as work shops, indoor growing rooms, warehouses and so on. it ideals for boosting supplyair, return air and venting. According to the aerodynamics, the balanced blades are engineered to minimize noise and vibration, they are for boosting supply air, return air, or venting.