Shop for FOME-COR® FOUNDATION Board. FOME-COR® FOUNDATION is comprised of a premium extruded white or black polystyrene foam core with acid-free uncoated paper facers providing a smooth, rigid, and flat backer material for archival and preservation mounting and framing applications. The antique white facers meet the Library of Congress standards for conservation framing of valuable documents and photographs. FOME-COR® FOUNDATION is sold in cartons of 25 sheets or a case of 70 sheets. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote or learn more about foam boards.