I wouldn’t dare show a pic of mine at the moment as it’s a mess, but I did 32x48 with 12ft flat ceiling and don’t have a lift yet the spot where it will go has 8in thick concrete and the lift cross bar will just fit under the ceiling. I had some industrial heavy back insulation given to me so it’s double rolled in the overhead so it’s cool in the summer and takes very little to heat when it gets cold. One thing on the drive in doors go at least 10x10 or if you are going to use one on a regular basis do one 10 wide and the other 12 especially if you need to back an open trailer in, enclosed with roof A/C will need 12 x 12. Doug