I purchased a greenhouse from your company more than 10 years ago. The greenhouse is till being used and the plastic covering is still good. I have and eight foot diameter greenhouse. I think it was the middle of 2 or 4 sizes that you had at the time. I am interested in purchasing the same size or the next size larger. I never thought it would last so long and work so well, and the best part is that I can put it together myself. I usually take the greenhouse down at the end of June and sometimes put it back up in the fall and use it again till December. Thanks for a great product!