Specification :

rib lath(metal lath) has stiffening V ribs providing strength for its tensile force. Stiffened by longitudinal ribs, gives a uniform coat depth for large areas. Provides an excellent plaster base. It's ideal for providing a high degree key of mechanical bonding with plaster or render. Widely used as a background for plaster, render, stucco application in construction of suspended ceilings partition.
Metal lath is formed by punching, slitting, and expanding, plain or galvanized steel coils or sheets. There are variations of metal lath, all providing excellent results for particular applications. Since it is more expensive than wire lath, metal lath is usually only used on soffits, on walls supported by metal studs, or for small patches. There are two general types of metal lath: those with ribs and those without. Metal lath without ribs is called diamond mesh.