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The VELUX flexible sun tunnel TCF is used for installation in flat roofs which brings natural light into areas of the house where a flat-roof window installation is either not possible or not appropriate. The frame is made of white polyvinyl chloride (PVC). Sash and diffuser are made of acrylonitrile styrene acrylate (ASA) plastic and the dome is made of transparent plastic (polycarbonate). The tunnel is made of flexible reflective material. For the placing of the product on the market in the European Union/European Free Trade Association (EU/EFTA) (with the exception of Switzerland) the Regulation (EU) No. 305/2011/ (CPR) applies. The product needs a declaration of performance in accordance with the CPR taking into the European Technical Assessment: ETA -13/0764 of 14/10/2015. The CE-marking for the product takes into account the Declaration of Performance in accordance with the CPR. For the application and use the respective national provisions apply.