grohe com RAPID SL NOISE CONTROL AT THE HIGHEST LEVEL GROHE WHISPER For peace comfort and design freedom our concealed cisterns feature GROHE Whisper technology Thanks to decoupled pipe supports there is no sound transfer to the structure of the building when the water is released from the cistern to the bowl Allowing the WC to be located in the most convenient location without fear of disturbing others DIN 4109 describes the permitted noise levels in areas requiring protection against noise from household equipment which must also be observed in the case of sanitary installations The values specifi ed in DIN 4109 A1 or DIN 4109 Supplement 2 are the generally accepted technical regulations The renowned Fraunhofer Institute has confi rmed the excellent noise control properties of the GROHE Whisper technology in Rapid SL and Uniset in its own tests The excellent measurement results of all products meet the requirements of DIN 4109 A1 VDI 4100 or DIN 4109 Supplement 2 Deviating from standard noise control with 30 dB A DIN 4109 A1 defi nes Increased noise control requirements with 27 dB A Comfort noise control with 24 dB A Applies to apartment buildings For semi detached and terraced houses the values are 25 22 db A Level 1 Standard noise protection Level 2 Increased noise protection Level 3 Comfort noise protection Under practice oriented conditions the Fraunhofer Institut für Bauphysik has carried out noise measurements with Rapid and Uniset Rapid SL On the wall Rapid SL Studded wall DIN 4109 Level 1 DIN 4109 Level 2 DIN 4109 Level 3

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