Ultra Spec® Masonry High Build Block Filler K571Details Available Colours: White Sheen (or Gloss): Flat Cleanup: Soap and Water Resin Type: Acrylic Blended Latex Recommended Use: Interior, Exterior MPI Rating: 4, 4 X Green VOC Level: 45. 0 Features A full bodied and high build, latex block filler specially formulated for easy brush, roll or spray application. It may be top coated with conventional Latex or Alkyd finishes as well as with Epoxy, Aliphatic Urethane, and Quick Dry Enamels. Fills small