36" x 400 yds. Heavy Duty VCI Paper Roll. Use Volatile Corrosion Inhibiting (VCI) paper to cover or wrap ferrous metal parts or surfaces. Use for long-term storage of iron, steel and other ferrous metals. Chemically treated paper continuously vaporizes creating an environment that blocks out rust, corrosion and oxidation. One square foot of VCI Paper for every one cubic foot of packaging area is recommended. Completely wrap for maximum protection.