Made from galvanized steel, (door leaf is 1.0MM, door frame is 2.0MM).The thickness of door leaf is 9CM, Aluminum foil filling. Vacuum transfer printing, the appearance is right angle spliced seamlessly, Sun proof, weather proof, water proof, theft against, fireproof, Every single hinge can bear 300KG. The peep hole is made from pure copper. The color will not change more than 10 years in open air. Any style and color as you need.