a message or note board that is also a holder for mail constructed of recycled plastic material and assembled from several different types of plastic but easily disassembled with common hand tools so that after final use , the parts may be segregated for further recycling . the noteboard has a flat plastic backing or plate that can be attached to a wall or a door on a refrigerator . attached to the front surface is a transparent sheet that can be written on with a dry - erasable pen . a sheet of paper may be inserted between the transparent sheet and the backing plate and contains information . the lower end of the plate has an l - shaped tray or ledge that supports mail .