Ribbed expanded mesh, commonly referred to as rib lath or Hy-Rib, is a type of expanded metal mesh featuring V-shaped longitudinal ribs for increased strength and rigidity. It is primarily used in the construction industry as a permanent formwork for concrete and as a plaster or stucco base.
It comes in various weights (e.g., 1.75, 2.5, 3.4 lbs per square yard) and sheet sizes to meet specific project requirements