NFL Cincinnati Bengals Plastic Parking Signs by BSI. $11.34. Durable Styrene Construction. Officially licensed NFL product.. Great for home office or dorm. 12-by-18 inches. Show your team spirit proudly with this 12-by-18 inch Fan Zone Parking Signs. Each 12-by-18 inch parking sign is made of durable styrene. The officially licensed magnets are decorated in the team colors, great for decorating home, office or dorm.. Save 63%!