Plastic A-frame signs or sidewalk signs are made of plastic and are double-sided. They are lightweight and give neat and professional look.
Chalkboard signs, on the other hand, have wooden frame. Wooden chalkboards have retro style and are mainly used in pubs, bars or fancy restaurants. The main difference is that you can change the graphics of sandwich board sign. In case of Chalkboard signage you erase and create another promotion with chalk.
A-frame board can have the chalkboard effect printed on vinyl whereas chalkboard signs, if necessary, can be decorated daily, offering for example today’s menu or depict a humorous massage.