Good Morning Larry,
The bay doors that I store my 22' in are 10' x 12'. If I could do it over, the doors would be 12' wide instead of 10'! (10' wide allows very little clearance as the fenders pass through the opening). I do have a radar arch with the radome mounted on top of it, but it is a bit shorter than some. ( 12' height works fine but obviously height depends on the radar arch ). The. depth of my shop is 34' which allows 4' of clearance between the rear wall and the engines in the down position. (If I had that to do over I would have gone 38' deep for more room when performing engine maintenance).
Pictures of my shop may be viewed on pages 2 & 3 of the Sea Shift photo album.