Plaster support is a construction material consisting of thin strips of wood or metal that are used to hold plaster in place. The term 'LATH' is used to refer to the thin strips of wood or metal used in plaster support. LATH is typically nailed to wall studs or ceiling joists and then covered with plaster. It is an important part of the construction process, as it provides a strong base for the plaster to adhere to.