This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. This specification covers four types of glass cloth coated on both sides with a flexible, vinyl-copolymer resin, the type of glass cloth varying with nominal thickness of the product. Primarily for use as a nonporous, abrasion and flame resistant, trim cloth or as a covering for thermal and acoustic insulation blankets for use up to 80 degrees C (180 degrees F).