Just ordered our third vent. It works well and installs easy enough but after a few years( after monthly cleaning) the grease drips off the motor. Hard to keep clean. Also after 2 years it starts to squeak. So here we are ordering number three. I think were going to see if we can find something else that will fit into our space that's more easy to maintain and hopefully will last longer. Its getting old popping the canopy off and reinstalling. As always the devil is in the details. It does work well just has a short "shelf life" .