I used it at home for about a year. Instead of writing, I used it to stick magnets and show my child's daily schedule. There are minor scratches and signs of use. I wiped it with a wet cloth once, but there is still some chalk residue that couldn't be removed. There are chipped parts on the blackboard. Please check the photos. As a bonus, I will include the blackboard eraser and chalk set that I used. The blackboard eraser has been vacuumed with a hand cleaner. The chalk includes white chalk which is chipped or broken. Thank you to those who understand that this is a used item m(_ _)m BB020BK Frameless Blackboard Size: W300 x H450mm (Thickness 19mm) (30 x 45cm) For creating POPs, menus, boards, signs, etc. Can be written on with both board markers and chalk. Since it is frameless, it can be connected to other boards. Can be used vertically or horizontally. Metal board that can also be used with magnets. Matte finish surface. Comes with hook hardware. Dustless chalk comes in 5 colors. Simple packaging. If I don't have a suitable cardboard box, I will wrap it in bubble wrap and put it in a bag for shipping. #Educational toys, Asuka, Education, Drawing