I've found it, but it's not very clear. It's an engine filter. Trisa Engine filter for 9463

The only similar one would be this one: Rowenta Compact Power Cyclonic RO3798 However, it cannot control the power but only the suction force directly from the hose.

One is already there

Yes, this vacuum cleaner is espacially made for parquet floors. The soft tyre wheels protect the floor coverings.

So, of course, the floor attachment is included. Nothing else. There is a holder for suction brushes on the suction tube. But you have to buy this accessory separately.

Not necessarily. You can also vacuum well without it, i.e. with the material that is included.

Call Trisa in Triengen LU or order on the website in writing or by e-mail. Works very well. By the way, Hepa filters can be taken apart and washed 2-3 times under running water before ordering a new one.