This is the third GE disposal I've had in my house. All the same model. The first lasted 9 years and the second 3. I'm unsure what happened to the 3 year disposal with the unit seizing up. The new disposal I just installed had a knockout plug for the dishwasher drain. That didn't happen due to incorrect molding of the housing. I had to drill out the hole before installing the disposal. If not for this I may have given the disposal 4 stars.