At Jumbo or Bauhaus simply those that offer the brand Kärcher have such bags and it is exactly described for which models they fit. I hope I was able to help.

Fleece filter bag KFI 487 from Kärcher
Kind regards

Unfortunately I don't know, as we have never used it...

Scroll down the product page. Under "often bought together" you can see the bags.

I use the hoover with a bag:
Kärcher fleece filter bags (4 pieces)
These fit perfectly. The filter then clogs less quickly, but even with the bag, the suction power decreases relatively quickly. I'm not really satisfied with the whole vacuum cleaner. Need it as a construction vacuum cleaner.
As a wet hoover, you naturally have to work without a bag.

Can't say anything. Gave the hoover to my son as a present, he doesn't need a bag but is very satisfied

It's a bagless hoover...
It can suck up water too. It's very powerful.

This hoover is very efficient, perfect! It's bagless. Easy to clean.

I use the one without the bag.
That's why I can't answer the question.