Large Butterfly - type B400 x 370mm Add a corten butterfly to your fence or wall (also suitable for indoor use). Wings folded outwards slightly to create a 3d effect. Type A also available. Made from corten weathering steel (more on corten here) and supplied with a stainless steel mounting bracket, this quality product is designed to last a lifetime! Like this product but want to change it? We are always happy to customise to order (e. g. paint, size or use in a different