Durable Materials Our Egress Ladder are made of wrought iron with high-temperature baking black paint on the surface, which is resistant to scratches, cracking, peeling, UV rays, and rust. It can have long-lasting appearance and service life 510LBS Load Bearing: The splice of our escape ladder is fixed by two screws, and there is an 8mm thickness wall panel, which makes the load-bearing capacity of our ladder stronger and ensure your safety during emergency moments