We are cosidering buying a 10' x 12' Harbor Freight greenhouse and at one time saw pictures of a modification with metal conduit. A rectangle of EMT made with long pieces connected by 90 degree angle pieces was attached to the greenhouse at the corners and walls. I cannot find these pictures now. The only modifications that I can find are cross braces from one side to the other made from EMT. If anyone can give me the link to the modification described above, I would really appreciate your help.