Durability of wood and wood-based products. Use classes: definitions, application to solid wood and wood-based products shop-only BS EN 3660-004 is a

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Durability of wood and wood-based products. Use classes: definitions, application to solid wood and wood-based products shop-only BS EN 3660-004 is a1 Scope This European Standard is applicable to solid wood and wood based products. This European Standard defines five use classes that represent different service situations to which wood and wood based products can be exposed. This standard also indicates the biological agents relevant to each situation. A use class is not a performance class and does not give guidance for how long wood and wood based product will last in service.