Polyfit signs are more flexible in the sense they have both the normal aluminum lettering panels and panels with grooves for inserting clear plastic, paper, 2ply engraving material or anodized aluminum. These inserts are easily exchangeable and add a new dimension to the sign design and appearance. These insert are useful for providing changeable information. Poylfit signs can be painted to suit the requirements of the client or can be used with its natural aluminum finish. Text/graphics can be screen printed on the aluminum panels. For the inserts they can be reverse printed on clear acrylic, computer printed on paper behind clear acrylic, engraved 2ply engraving material, photo processed on anodized aluminum, etc.