Aluminum Foam Board is a lightweight structural panel consisting of a rigid polystyrene foam core faced on one side with anodized aluminum and one side with high impact polystyrene foam. The foam and facers are permanently bonded together. The anodized aluminum panel can be used to create decorative letters and logos at a fraction of the cost of solid metal letters.it is the ideal material for decorative letters and logos often seen in hotels, banks and office buildings and direct UV printing. It can be sawed or routed, and is easier to craft than solid metal. It even maintains its appearance better — the surface is anodized aluminum, which will not rust, fade or tarnish