MR1570 Features: * Retro-Fit boards fit easily over existing wood or aluminum framed boards * No need to remove existing board * Magnetic porcelain enameled steel surface * Satin anodized aluminum trim, no tray * No need to remove existing chalk tray * Factory-drilled, counter-sunk holes for easy installation * Installation hardware sent with board * Features a superior quality 28-gauge porcelain enamel steel surface * Reduces cost with less installation time Includes: * Includes Marsh"s 50-year warranty