A friend of mine had connections at a garage door installation company. They'd save all the old removed door panels that weren't damaged and in under a year he had enough to completely cover the inside of his wash bay at his car lot. It helped the door company as well, the old panels weren't accepted at the landfill because of the foam core and metal exterior. I got 5 24" x 14' panels from work when they replaced a door that was damaged, they made a great insulated area for my water tank and heater in my crawl space....mike