This is an inline duct fan with a speed controller. I bought it new and used it for ventilation in my room. I'm selling it because I no longer need it after moving. ・Used for about six months ・Relatively clean because I used a filter on the intake side ・Ideal for painting plastic models and figures, soldering, and other tasks ・Operation confirmed before listing ・No smoking, no pets ・Packed and ready to ship ※Manufacturer's Description Rated Voltage & Frequency: 100V～120V AC, 50/60Hz Materials: PBT & Aluminum Speed: 5000rpm Airflow: 275㎥/h Static Pressure: 334Pa Noise: 56.8dBA Connection: Inline fan pipe φ100mm Power Consumption: 20(W) Operating Humidity: Below 90% Operating Temperature: 15°F (-10℃)～140°F (60℃) Applications: Ventilation for pet toilets Home barbecue smoke exhaust fan Industrial ventilation blowers Smoke exhaust within machinery Tent ventilation Exhausting heat from the double roof structure of log houses Exhaust for laser processing machines Home ventilation fans Underfloor ventilation fans Ventilation fans for soldering, solvents, and other crafting purposes Toilet ventilation fans ※Search Keywords Impeller Brushless EC motor Speed control Deodorizing filter compatible