Thank you for the quick response. Yes, I am will probably add some thickness to the sides. At least to get to 1", but I maybe 1.5". So, just for my own peace of mind, and to make sure I understand the layout - when the the horn turns to the front, it has a width of 2.75" and a height of 22.25". I'm sorry if I'm asking hte same question again, but for I would have thought the width would have stayed at 3" or got slightly wider.
Thanks, again. I appreciate the help
Peter