The recommended primer for undercoating of the anti-rust gloss enamels. Use on unpainted ferrous metal, clean off rust before applying primer. Galvanized and aluminum metal surfaces should be primed with galvanized metal primer model No. 044.0021850.007. Bare wood and interior walls should be primed with latex enamel primer. Exterior bare wood should be primed with an exterior oil primer. Approximate coverage: 400 sq. ft. per gallon. Refer to model No. 465.0068227.076 sandable spray primer, or 044.0021951.076 for spray primer.