170mm Metal Oval EC Cooling Fan Product Details: Mounting: Free Standing Place of Origin: Shandong, China (Mainland) Brand Name: Tongxin Model Number: TX17251 Size: 172X172X51mm Power supply: 110V/115v/230v Current: 0.18~0.35A Air Pressure: 9.4~18.5(H2O) Noise: 44~59DB(A) Bearing Type: Ball Bearing Material: Plastic Blade/Aluminum Frame Motor: Copper Motor Power: 16~35W Air Volume: 185.2~260CFM Speed: 2500~3500RPM Certification: CE,ISO9001;2008