We used Garage Door Medics out of Daphne and were very happy with their roll up door installation!
(251) 554-9478. Not related, just a satisfied customer.
Try Pinckards garage door in Pace (Milton?) (850) 994-7201. I was pricing doors to install myself last year and was shocked at the prices until I called them. The price I got from them was better than all the others and they installed it. All others were pricing just for the door with me installing it.