This document specifies terms and definitions for different PVC based materials used for the production of unplasticized polyvinylchloride (PVC-U) profiles for windows and doors. It describes the content and meaning of post-consumer and post-industrial recyclate as it is used in new products. It distinguishes between different PVC recepies used in production for PVC window and door profiles. This document serves as the reference standard for definitions used in related standards such as all parts of EN 12608, EN 17410 or standards for PVC based profiles for building applications.