1. 26-gauge galvanized steel curtain
2. Siliconized Polyester primer and top coat
3. Extruded aluminum bottom bar with structural steel angle for maximum strength
4. Dual galvanized steel slide bolt locks provide for two padlocks and added security
5. Heavy-duty galvanized steel guides hot dipped for maximum strength and rust resistance
6. UHMW nylon windlocks provide up to 140 mph protection without sacrificing ease of operation
7. 12" drum assembly
8. Steel bearing shaft support
9. Structural steel wall mounting bracket
10. 4:1 reduction gear chain hoist standard for doors over 100 sq. ft.