The K4 weather-resistant stainless steel door frame is designed for outdoor use and harsh environments. It utilizes a special stainless steel material with excellent weather resistance and a weatherproof construction. It withstands wind, rain, sun, temperature fluctuations, and other harsh conditions, maintaining stable performance and appearance over time. Its surface undergoes a special weathering treatment, providing excellent resistance to UV rays, oxidation, and corrosion. It is suitable for use in locations exposed to harsh environments, such as outdoor buildings, coastal facilities, and mountainous areas. New Leaf Metal's weather-resistant technology provides customers with the most reliable outdoor door frame solutions.