This specification covers woven wire plaster base, flat or self-furring, with or without stiffener wires, and with or without backing, designed for use as a base to receive gypsum or Portland cement based plaster. Backing shall allow lapping of wire-to-wire and backing-to-backing of one mesh at ends and edges and shall have a minimum tensile breaking strength. The wire shall be zinc-coated (galvanized). The weight, size, and diameter of the wire are specified.