OSPHO 1 Gal. Rust Treatment Drywall Joint Compounds & Tape For use with 300

For use with 300

Use indoors or outdoors

Width: 4-3/4"

Set Combinations With Words Instead Of Numbers

protected by a lifetime limited warranty for decades of dependable use

OSPHO 1 Gal. Rust Treatment Drywall Joint Compounds & Tape For use with 300OSPHO is a rust inhibiting coating not a paint. OSPHO causes iron oxide (rust) to chemically change to iron phosphate an inert, hard substance that turns the metal black. Use on new metals, for new ferrous or aluminum metals. Is effective for exterior and interior work alike. Recommended for use under oil base primers and paints. Test a small area before using under epoxy or latex base paint. Covers approximately 600 Sq. Ft. per gallon. Normally