G GYPSUM BOARD COLLECTION Product information Products / Gypsum Board / Product Details Product description 15 mm Fire-Resistant Gypsum Board for Tested Wall Assemblies Practical use within a tested assembly guidance for project buyers and specifiers, with specification checks, source notes, installation risks and procurement question. SEO Title: 15 mm Fire-Resistant Gypsum Board for Tested Wall Assemblies Meta Description: Practical use within a tested assembly guidance for