We also have the four panel screen that lifts like a garage door. YOur looking at about 1200 dollars and I also used Thumper. There was a miss alignment in mine and it took four visits from Thumper to find the problem but he was there every time I called and I wasnt made to wait. He was usually there within the hour. Its hard to find service like that any more. Now it works like a dream. By the way this door is over a year old at the time and he never charged me a dime for all the visits.
I forgot to mention that if u have the garage door to the house closed you wont get much air circulation. If you open this door to the house you get one heck of a breeze in the garage and the house.