The New Age Pet ECOFLEX Jumbo Fontana Pen is specially designed for keeping chickens. It features a frame made from a blend of recycled polymers and wood byproducts and is resistant to moisture warping cracking and splitting. You can use it as an independent structure or attach it to the ecoFLEX Jumbo Fontana chicken barn. This item is designed to last for a long time with no maintenance and is made with galvanized wire and rust-proof hardware. The Fontana chicken barn pen is simple to assemble without the need for tools. It includes a side door for easy access.