Unlike the ordinary metal A-frame, the adding double-sided magnetic dry erase whiteboards function, can still write on the smooth and durable magnetic writing surfaces without posters, write or wipe at any time! Heavy-duty and durable metal folding A-frame sidewalk sign holder - just snap open the front and change the picture/poster with no need to take the frame down. A UV ultraviolet resistant, anti-glare PVC protection lens covers the poster/whiteboard, keeping it clear to display, dustproof, waterproof, weatherproof and fingerprint-proof.