Product review (3 stars): Heads Up:  3 1/4" X 10" Vent Cover NOT Included
Seems like a good unit.  Unfortunately I can't install it because it does not come with the 3.25" X 10" Top Vent Cover and Exhaust but only with the 6" round.  This is not clear in the information at the top. The information in the Q&A above, stating the that it does come ready for either installation is just wrong.  The two piece TVC20 (Top Vent Cover) kit is listed in the Quick Reference Guide as "Sold Separately."
I have no problem with them selling it set with the 6" round vent and requiring a separately purchased adapter but this should be clearly stated.  And the Amazon Q&A should be corrected.  I will update this review after my (delayed) installation is complete.

Follow up:  I spoke with Kobe on the phone--this model DOES NOT come with the top vent cover (TVC20)  The kit is available for $47.99 from AppliancesConnection.com.  So add that to cost if you are connecting to a 3.25" X 10" rectangular duck  . . and add the unknown shipping time.