The easy way to get a fresh board without the hassle of removing your old one! Porcelain Steel Retro-Finish Panels make short work of resurfacing any old chalkboard or markerboard. No need to remove the existing board. Simply drill the Retro-Finish panel directly into the old board. Factory framed panels come with pre-drilled holes to make mounting easy. Surface is durable porcelain steel for a superior dry erase surface. Standard gloss porcelain provides superior writability and erasability with no ghosting. Reduced surface light distortion enhances visibility to provide optimum eye comfort. Custom sizes available. Limited lifetime warranty. SCS Indoor Advantage Gold Certified.