Sean was extremely professional. He even put the part of the wall that he cut out in the box that held the dog door and let me know that if I want to remove the doggie door at any time, he can replace the wall such that it will look as it did before for $150-200. Highly recommend his work. Also don't do what I did and cheap out on door - I'm not replacing it because it lets too much heat in and will significantly increase my AC bill...