This is the old-style system. It is made of very strong galvanized steel. No rust. Call 250 920 8559, please do not text, thank you. 4 - 8 ft. high 4 posts - 5' high (sgl.) 2 post - 6' high Support are as follows: Square type: 9 at 19 inches 7 at 14 inches Flat type: 2 at 13 inches 2 at 8 inches 2 at 4 inches 1 at 14 inches Take all for $300 OBO. Updated Dec. 29, 2020.