DIN EN 14220:2007-01

This European Standard specifies principle material requirements for timber and wood-based products in external windows, external door leaves and external doorframes (with or without fixed parts), including those relating to appearance, biological durability and other physical characteristics. This European Standard applies to assembled windows, external door leaves and external doorframes uncoated or intended to be coated. If windows or doors are covered by other decorative veneers or films their respective veneer of film Product Standard shall apply. NOTE For example: Timber veneers may be graded to EN 635: Parts 1, 2, 3 and 5, and ENV 6354.