4/5/6 Inch Exhaust Fan Home Silent Inline Pipe Duct Fan Bathroom Extractor Ventilation Kitchen Toilet Wall Air Ventilator ,Energy-Efficient

Superior balanced blades for long service life and quiet operation Motor features a permanently lubricated bearing that operates quietly and requires no maintenance Portable and lightweight, easy to install Fluted on both ends to receive ducting Balanced metal blades are for boosting air supply and venting exhaust air