This replacement blower wheel is specially manufactured for Broan and Nutone ceiling fans/heaters. This wheel is also known as squirrel cage fits inside the housing on the motor shaft. As it rotates it will produce an airflow. Over time it may warp rotating irregularly which can result in unwanted noise and/or poor performance. This wheel...Read more is made out of plastic and it is sold individually. Please note the hardware to secure it to the motor is sold separately. Repair is fairly easy, requiring only a screwdriver. • Unplug the unit first • Remove the cover • Separate the blower wheel from the shaft • Secure the new wheel on the motor shaft • Reassemble and test