This European Standard covers membranes, individual substructure components, substructure kits and suspended ceiling kits when these are placed on the market. This European Standard also gives certain specifications for the installed suspended ceiling system, for two reasons: the individual components and kits may have to meet certain requirements in order for the installed system to be able to meet the requirement when the system is installed, and because it is appropriate, for ease of reference, to give both component/kit requirement and installed system requirement in the same document, given the relationship between them.This European Standard provides information for the various parties responsible for designing, manufacturing and specifying/selecting suspended ceilings used for interior applications in general building and civil engineering structures. It covers suspended ceilings sold as a complete kit, substructures sold as kits, individual components (products) of such substructures, and membrane components. It includes test methodsand methods of assessment, as well as provisions for the evaluation of conformity of the products to the requirements of this European Standard.In the absence of any other European Standard, this European Standard specifies dimensions, tolerances and, where relevant, performance requirements, for commonly available ceiling substructures and membrane components.This European Standards covers the following essential characteristics: reaction to fire; fire resistance (suspended ceiling kits only); release of dangerous substances: release of asbestos (content) (suspended ceiling kits and membrane components only); release of formaldehyde (suspended ceiling kits and membrane components only); other dangerous substances shatter properties (safe breakage) / impact resistance (for suspended ceiling kits and membrane components of brittle materials in suspended ceiling kits only); flexural tensile strength; load bearing capacity,