I have this filter and HEPA filter set ordered due to the many good reviews, because I wanted to have a comparison of the filter. The result is sobering. This filter here is grossly overpriced and quality of underground. There is a, not even clean, circular cut-out piece fleece. The product value is expected to be at 20 cents. In addition, there was also a touch too big, so he was in the opening bent at the edges upwards. The Hepa filter is, however, absolutely great and almost better than the original. I can tell UNR, who needs such a filter, which should pick up the HEPA set, there is then also the other filter coincide with it.