Wall covers are materials used to cover walls, usually for decorative purposes. The term 'wall covers' can refer to a variety of materials, such as panels, which is a 6-letter solution to the crossword. Panels are thin sheets of material, often made of wood, metal, or plastic, that are used to cover walls. They are often used to add texture and color to a room, and can also be used to hide imperfections in the wall.