Product Feature -Energy efficient & quiet operation -Lightweight & super easy to install -Balanced blades are ideal for boosting air supply and venting exhaust air -Engineered for maximum boost with minimum noise -Motor features a permanently lubricated bearing that operates quietly and requires no maintenance Specification: Type: Exhaust Fan Color: Black/White Size1: 8 Inch Voltage: 110V Frequency: 60HZ Current: 0.73A Power: 80W Speed: 2800r/min Air Flow CFM: 765 Noise: ＜62dB Pressure: 140 Pa Size2: 10 Inch Voltage: 110V Frequency: 60HZ Current: 0.90A Power: 100W Speed: 2800r/min Air Flow CFM: 1240 Noise: ＜65dB Pressure: 215 Pa Size3: 12 Inch Voltage: 110V Frequency: 60HZ Current: 1.09A Power: 120W Speed: 2800r/min Air Flow CFM: 1765 Noise: ＜68dB Pressure: 230 Pa Package Include 1x Exhaust Fan 【UNIQUE DESIGN】The duct booster fan adopts double-ball oil-impregnated bearings, which are permanently lubricated. With a seven-blade design, it achieves the effect of low friction and smooth air circulation, thereby realizing quiet operation of the extractor fan. 【ADVANTAGES】Superior balanced blades for long service life & quiet operation. Motor features a permanently lubricated bearing that operates quietly and requires no maintenance. 【SAFE AND WIDELY USED】Built-in overheating protection device and ABS material sleeve shell, double protection for the motor, and the motor runs less heat, which can be used in the kitchen attic grow tents garage greenhouse for a long time. 【APPLICATIONS】Help to boost airflow in HVAC units to remove exhausts and odors from kitchens & workshops and ventilate basements & attics, etc. Also great used as intake fan to bring fresh air into grow rooms. 【Note】If any other materials/particles get into the duct fan and get the blade stuck, users are to turn off the power immediately, clean it up, turn the power back on when handled properly.