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Rigid sun tunnel TWR is used for installation in pitched roofs and profiled roofing materials (tiles). It brings natural light into areas of the house where a VELUX roof window installation is either not possible or not appropriate. The black frame with integrated flashing is made of polyurethane. Sash and diffuser unit are made of plastic. The tunnel is made of rigid 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.