Does not fit well wirkluch to the original. In the first experiment, the screw connections are broken me, so be careful when tightening. In the second topside I was cautious, with the result that the shell is not seated properly and the whole structure becomes unstable and the device louder. Since the vacuum cleaner is older I just did not want to unnecessarily poke a lot of money. At the end of insulating tape for the necessary stability had to worry. The works now. If the shell but not buy it again.