Features: brand new and high quality This embedded fan to run more quietly and reach low speeds without generating noise or heat. Widely used in homes, offices, warehouses, restaurants, bars, shops, shopping malls, grow tents, greenhouses and other place where a lot of air is needed. Inline duct designed to produce highers working pressures for applications that require high air flows, with low relative noise. Can be mounted in a variety of applications and are suitable for use with either flexible ducting. Made of high-quality materials, exquisite workmanship, very good quality and long service life. Specifications: Material:Plastic Type:13W/16W Input: AC100-240V 50/60Hz Output: DC3V-12V 2A Power 13W Air volume: 186m3/h Wind pressure: 150Pa Noise: 42db Power 16W Air volume: 198m3/h Wind pressure: 180Pa Noise: 44db Length: Approx.225mm/8.85inches Internal diameter:Approx.97mm/3.81inches Outer diameter: Approx.110mm/4.33inches Package Includes: 1 Set Extractor Fan note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.