So it is what I ordered and saw no issues. It came out of the box easily and set up easily. I know when reading reviews, people complain about having to cut the.
Window adjustment slider, whatever you want to call it.  So it says in the instructions that yes, Some windows. Will need adjustments and that you would have to cut the plastic that you put in the hold the vent.  Not a surprise. If people would read the instructions, they even offered online before you buy, so you can see this. Besides it's plastic no big deal. What I did was I turned to slider, backwards. I didn't use the wing nut And adjusted it from there until I can get Some shears to cut the plastic.  Had it plugged in for about? Maybe 10 minutes fan set on high temperature set 62. And I can feel the difference, am I master bedroom.

In the end, if you don't like reading instructions, go to YouTube and look at the. Reviews.  Seems like a good product so far. I guess we'll see in the future. What I get.