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ASTM C991-25a Standard specification for flexible fibrous glass insulation for metal buildings

Publication Year

2025

Document Status

Current

Abstract

Specifies the classification, composition, and physical properties of flexible fibrous glass insulation for use as interior surface of walls and roofs of metal buildings.

Document History

Supersedes ASTM C991-25a.

Publisher Information

American Society for Testing and Materials

ASTM International offers global access to standards development for over 140 participating countries.