Using the model number of my Whirlpool combo oven, I looked up the part number for the lower blower assembly and also viewed the video showing how to do the repair. The repair video showed a Kitchen Aid appliance, but the part looked the same. So, I ordered the part and completed the repair with the help of a neighbor. My back cover plate was a little different than the video, but once removed, the blower assembly was the same. The video was very helpful.