Size: 19.7" x 15.7" Special announcements or everyday messages will look concise and well-organized with this wall-mounted magnetic board. Fluent writing: The dry-erase board provides you with a smooth writing experience, and the handwriting is easy to clean with an eraser. Durable tempered glass: The magnetic notice board is made of tempered safety glass, making it durable and lasting a long-time. Multifunctional writing board: Use the wall-mounted magnetic board as a blank canvas to jot down daily plans and to-do lists or a collective place for putting your creative thoughts and ideas. Convenient installation: The required wall mounting materials are included, which makes the magnetic chalkboard easy to attach to any wall in your home, office, and school. We recommend using strong magnets(N35) to achieve the best effect. Note: Each product comes with an assembly manual in the box for easy assembly. Screw(s) and plug(s) for inside the wall are not included. Seek and use screw(s) and plug(s) suitable for your walls. If you are uncertain, seek professional advice. Read and follow each step of the instruction carefully. On magnetic glass boards, magnets can only reach part of their full force potential through the glass pane. Strong magnets (magnet type, if available) are required to attach items to this type of board. Refrigerator magnets and magnetic tapes do not adhere to magnetic glass boards. Likewise, pot magnets, ferrite magnets as well as very heavy office magnets are not suitable for magnetic glass boards. We recommend using strong magnets(N35) to achieve the best effect. Color: Black Material: Tempered glass, galvanized steel Size: 19.7" x 15.7" (L x H) Thickness: 0.16" California Proposition 65