The filter is a fine-particle, like many others. Just as with the bags, there are significant differences in quality, which is why I prefer to buy the Originial. Therefore, nothing special - except my info: Lt. Statement of Bosch-Siemens Hausgeräte-Service fits this filter very well in the Siemens VS06G2410. This is in the product info from Amazon (at least currently, perhaps that is indeed now changed) explicitly denied. I ordered it and can confirm: The filter fits and works.
A little tip: Anyone who uses a HEPA filter, should use good bag: The better the bag, the more dust is captured before the filter. Then, the filter does not clog as quickly - and the filter is more expensive than the bags.