Thanks all for your replies and tips. This forum is great.
Does the door need to open more than 90 degrees to get the racks out?
I have already built the grill framework. I can leave extra space on the left for door clearance, I just need to know how much I need. I will build the smoker base and size it to give me the width needed to open the door and the height to match my counter top. I guess the best thing for me to do would be to order the smoker and get it here to size everything exact.