Rugged SteelForm™ doors are ideal for commercial and industrial applications. SteelForm door sections are a full 2" thick and made of hot-dipped galvanized steel for maximum rust resistance. SteelForm™ S16 is designed for peak performance and has a heavy-duty, 16-gauge steel skin and rugged hardware provide maximum reliability and durability. SteelForm™ S-20 and S-24 features 20 and 24-gauge steel doors and offer the widest selection of quality features and options. SteelForm™ S-24C provides Raynor quality and durability in a limited selection of sizes, features, and options.