M-Glass Shaft Liner panels consist of a fire-resistant type X gypsum core that is encased in a moisture and mold resistant glass mat fabric. The panels feature a double beveled edge for ease of installation, with the ends being square-cut and finished smooth. M-Glass Shaft Liner panels are available: 1" thick x 2' wide, and in a variety of lengths.
American Gypsum products contain no asbestos and no detectable levels of formaldehyde.
M-Glass Shaft Liner panels are UL Classified (UL Type - M-Glass) and used in conjunction with other American Gypsum products and metal framing members for Shaftwall and Area Separation Wall systems. Lightweight non-load bearing gypsum Shaftwall systems have replaced traditional masonry for interior vertical enclosures including stairwells, elevator enclosures and mechanical chases.
American Gypsum’s M-Glass Shaft Liner is manufactured to meet or exceed the requirements of ASTM C1658/C1396, and was developed for and is backed by a limited warranty for exposure up to 12 months under normal weather conditions on commercial and residential projects.
American Gypsum’s M-Glass Shaft Liner panels have been approved for use in the following fire rated assemblies:
M-Glass Shaft Liner panels have achieved UL Environment’s GREENGUARD GOLD Certification. GREENGUARD Certified products are scientifically proven to meet some of the world’s most rigorous, third-party chemical emissions standards, helping reduce indoor air pollution and the risk of chemical exposure while aiding in the creation of healthier indoor environments.
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