Wattyl Sealer Undercoat 4 litre White SKU: 189849 MODEL: 819820.004 Error. try again later You've successfully joined the club $ 88 .88 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants An acrylic based general purpose sealer undercoat for indoor surfaces such as GIB, MDF, particle board or timber underneath acrylic or oil based finishes. Features and benefits Indoor only. Can be applied under acrylic or enamel finishes. Excellent adhesion.