Nox-Rust Vapor Wrapper VW60H corrosion inhibitor (VCI) paper is a 60 lb/ream (98 g/m2 ) natural kraft saturated with Daubert Cromwell’s proprietary nitrite-free corrosion inhibitor (VCI) formulation for ferrous metals. It is designed and tested to provide long-term protection of ferrous metals in government and military applications. VW60H paper is listed on the U.S. Department of Defense Qualified Products List (QPL) for Mil-PRF-3420H, Class 2, Style A (medium duty, kraft, flat carrier impregnated with corrosion inhibitor). NSN 8135-00-664-4012.