Create your own custom messages with our Blank, 6″ x 24″ Coroplast Sign Rider Boards. Seat the Sign Rider Board at the top of our Quick Change Sign Holders, item 1220. The hinges of the sign holder “grab” the Sign Rider and hold it in position. Designed for repeated outdoor use, they can be moved easily and left out in rain or sunlight without being damaged. Both sides of the Coroplast can be used for capturing attention. They require our NM-1SET or NM-2SET wet erase markers to withstand the elements. Wet erase marker copy is easily removed with glass cleaner. Coroplast signs can also be custom printed with your store’s logo, etc. Contact a Centurion Service Representative for more details.