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About This Item
1.1 This specification covers gypsum wallboard which is designed to be used for walls, ceilings, or partitions and affords a surface suitable to receive decoration.
Note 1 - Specification C 840 contains application procedures for gypsum wallboard.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. For gypsum wallboard produced to inch-pound units see Specification C 1396/C 1396M.
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.