A4 (305 X 228mm) 30mm Extruded Foam AK Interactive AK-8099Extruded foam is the best material for the base of your diorama or vignette. Its surface and overall shape can be easily adapted to your requirements, although it is not really suitable for carving. Now you don’t have to buy and store extra large pieces, as we bring you this foam in reasonably- sized pieces that will suit most modelers’ needs.