A Lattice Piece is a type of construction element used in carpentry and other building projects. It consists of thin strips of wood or metal that are arranged in a criss-cross pattern. The two most common types of lattice pieces are laths and slats. A LATH is a thin strip of wood or metal that is nailed to a frame to form a lattice. Slats are thin strips of wood or metal that are placed between two laths to form a lattice. Both laths and slats are used to create a lattice pattern in carpentry and other building projects.