CEMCO’s CEMMESH Flat-Rib with K-Paper is a more rigid lath with 1/8" longitudinal ribs spaced at 3" on-center that provide for wider spacing between wooden or metal supports. Backed with 2 strips of K-Paper, this lath is ideal for machine applied plaster. Small openings provide excellent keying for plaster. All CEMCO expanded metal lath is produced from standard G60 hot-dipped galvanized steel.