1.1This specification covers sheet lath, expanded metal lath, diamond mesh, flat and self-furring, and rib metal lath, ¹/₈and ³/₈in. (3.2 and 9.6 mm), all with or without factory-attached water-resistive barrier and designed to be used as a base for gypsum or portland cement plaster.

1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.