Read a ton of reviews.  Installation was easier then I expected.  I had a hard time understating how to navigate the sill with the items provided.  I ended up using a 2 x 6 of wood on the interior sill to get it where I wanted.  Super cold and quiet.  Only issue is the WiFi setup and light does not work.  Called for help and they were way helpful but we had no success.  I have to return.  Not happy to have to undo all the work and return.