FIRE DESIGN / TESTED ASSEMBLIES Fire Resistant Gypsum Board A Fire-Rated Wall Is an Assembly, Not a Single Board Fire resistant gypsum board is selected as a component of partitions, shaft walls and floor-ceiling constructions that need a defined fire-resistance design. A board label such as Type F or Type X does not by itself establish a one-hour or two-hour rating for an untested wall. Buyer focus: Before ordering, confirm product type, construction details and document
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