Quartet Dry-Erase Board, 4'x16', Aluminum Frame Premium porcelain writing boards feature a long-lasting writing surface that also doubles as a magnetic bulletin board. The extremely durable writing surface resists scratches and dents as well as ghosting and staining when used with dry-erase markers. The satin finished, anodized aluminum frame is heavy-gauge with crimp construction and all fours corners precision mitered for extra strength. Every board features a 3/4" frame face width and a full-length marker rail with protective plastic end caps for safe and easy access to markers and eraser. Boards sized 3' x 4' and smaller feature Quartet's patented SureLox hanging system, while larger sized boards feature a heavy-duty L clip installation kit for safe, simple and precise mounting any time.