Quality, performance and quite operation is the Vortex Powerfan. Its permanently lubricated motor and bearings ensures long life and quite operation. Though, any time you move a lot of air there will be some sound. The extended lip and collar makes connecting to vent ducting simple and easy. A prewired 6' power cord allows easy placement. Simply one of the best powerfans on the market. It uses 258 watts at 120 volts and is rated at 2.2 amps. It measures 13" in diameter and 10.5" deep.Vortex Powerfans are a high quality inline duct fan with permanently lubricated ball bearings that gives you the performance that you need while keeping noise to a minimum. It has a 6' prewired power cord, mounting brackets and an extended collar and lip to make connecting to vent ducting a breeze.