Foster® Eclipse™ Coating dries to form an effective air erosion preventive surfacing material sealing and reinforcing the surface of new or aged duct liner insulation materials.

Foster 40-11 is non-flammable when wet and extremely fire resistive when dry. When tested on both faced and unfaced fiberglass duct liner insulation, Foster 40-11 produced flame and smoke ratings below the 25/50 NFPA 90A and 90B requirements. The dry film stays flexible and moisture resistant. It will not cause flash rusting on metal surfaces. Dry Foster 40-11 resists mold, fungus, discoloration from mildew, and stains by mold. Its extremely high level of resistance enhances the longevity of the material.

Foster 40-11 contains no asbestos, lead, mercury, or mercury compounds. It meets NFPA 90A and 90B 25/50 requirements.