This European Standard establishes a system of designation for profiles made of unplasticized poly(vinyl chloride) (PVC-U) intended to be used for building applications. This part is applicable to light coloured and coloured PVC-U profiles, obtained by a mono-extrusion or a co- extrusion process, with or without a laminated foil or with a lacquered-coating. It specifies test methods and test parameters. This method of designation is intended to be used in product specification when the application is specified. NOTE It is recommended to use this method for the designation of PVC-U profiles for information related to technical literature of the manufacturer, not for the marking of the products. Profiles for the management of electrical power cables, communication cables and power track systems used for the distribution of electrical power, profiles for windows or doors and profiles for guttering are not covered by this European Standard.