Stock Photo - The 'flexipipe plus' ventilation system with heat recovery is display under a glass floor at the Helios booth at the International Sanitary And Heating Trade Fair (ISH) in Frankfurt Main, Germany, 11 March 2013. The ISH takes place from 12 until 19 March with around 2,430 exhibitors. Photo: ARNE DEDERT | usage worldwide. - Frankfurt_Main/Hesse/Germany

Stock Photo: The 'flexipipe plus' ventilation system with heat recovery is display under a glass floor at the Helios booth at the International Sanitary And Heating Trade.

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