Made of galvanized metal frame and have a beam in the middle to ensure its stability. The outdoor pet enclosures playpen is made of iron with anti-rust coating on each wire to prevent rust extend service life and reduce wear and tear during use. Chicken cage pens crate have 4 door openings. There is also enough space for children to come in and interact with their pets. There is a ground stake on each side of the six corners and a beam in the middle to ensure its stability. UV Protection Cover is silver-white polyester coat providing your pet with sun rain wind protection and safe crossing even but don t keep a lot of the rain out.