Product review (5 stars): The unit looks awesome and looks like it can handle all the grease ...
The unit looks awesome and looks like it can handle all the grease if it works properly.  Here are my major complaints.
1) The unit turn off by itself.  Can't seem to figure out why it does that
2) The on/off and fan setting is touch base but the touch is not sensitive.  Sometime it won't even turn on so we have to unplug and replug it back in.
3) The vent is 8" but most adapter and Lowes and Home depot don't come in 8" to standard 4" exhaust.  If you want to connect, you have to use 8" to 6" then another adapter to get to 4" exhaust which creates a lot of noise.

I will be contacting the manufacturer for assistance on issue #2 since I think it might be defective.

FOLLOW UP: July 9, 2015
I contacted the seller and received a response right away.  I discussed via email and phone with a few of their representatives and they were very helpful, especially Riche.  After some email exchanges and explanations of what is going on plus I sent them a short video, it was concluded that the product was defective.  The seller sent me a new unit right away and everything is working as it should.  We are very happy with the product.