Firewalls

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Revision as of 18:47, 10 June 2023 by Marcin (talk | contribs) (Created page with "*Gypsum + plywood is accepted, above or below gypsum [https://code-authorities.ul.com/about/blog/plywood-panels-in-ul-fire-resistant-wall-assemblies/]")
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  • Gypsum + plywood is accepted, above or below gypsum [1]