I figured if I waited long enough some of you would chime in. I built the shop several years ago with a 40 foot length and two roll up doors one is 12 foot by 12 and the other is 14 by 14. the wall heights are 16 feet. It is big. Outside it is 38 X 40. The details inside are pole barn style with metal siding on the outside and roof and 2X6 horizontal girts every two feet going up. when I throw a tape on the inside it is coming in at 39' 2". If we move forward and buy this coach could notch out where wipers land in they are across from the 2 x 6 girts since that is another 5 inches technically. The coach will take up less than half of the shop, other than the length issue. We really are attracted to the living area floor plan where you can have two sleeping areas and keep dining booth intact for morning coffee. Also the double slide really opens that up. Don't seem to find these features in very many coaches!