My son was building me a new storage shed for my yard-care equipment to replace two 25 year old steel sheds that were rusting, leaking and the sliding doors were almost inoperable. He suggest a roll-up door. I gave him the task of finding one. He searched the internet and found "Roll Up Doors Direct". He has also taken care of my yard since my husband passed away and said we needed a door that was wide enough to get the riding mower in without removing the mower deck and high enough so that he would not have to stoop down to enter without hitting his head. (He is only 5' 6" but the old sliding doors were only 5' 4" high). He always has scrapes and scabs on his head from hitting the upper track. He ordered the size he needed and built the shed so that it would fit. He said the installation was very fast and easy and I think it looks great. I am very pleaded with it. Thanks.