Indoor Signage in stock Foam & PVC Plastic Letters Our lightweight foam & PVC letters are perfect for indoors and are extremely durable. We choose high-density foam core with a hardened smooth surface on the front and back. They are usually routed and then painted in any set of custom colors. 1/4鈥?and 1/2鈥?PVC is our absolute favorite choice for all indoor and outdoor routed dimensional...