I bent the folded part on the bottom and on 1 side on the bench by clamping it between some angle iron and gradually worked it with a hammer untill it was 90 degrees, then removed it and continued folding it over a piece of 3/16 steel so it will slide over the door frame. Tacked it to the frame and then trimmed and folded the last side over the frame. Did both doors this way and am very pleased with the outcome.
Good luck............Dale
