Metallic White Board Adhesive Film WBM231. Convert any surface into a magnetic board effortlessly. The WBM 231 adhesive coating provides a writable whiteboard surface compatible with erasable markers, and it also features a magnetic surface for attaching papers, notes, and various objects. For a non-adhesive option, consider our WBM 221. Compatible with erasable markers, this versatile solution offers both functionality and adaptability.