It fits, but what most people write is that you can wash it and it's fine... mine dissolved when I washed it. I washed it with the rubber, maybe it had a little more pressure, but I didn't expect it to dissolve. I can't understand why they don't make that sponge-like filter for this vacuum model. With that one, you can wash it without any problem.

It is a different color compared to the one in the photo (white). It does not fit the closure of the packaging for the wd3 vacuum cleaner, so I used the old one. It does its job normally.

I have bought a vacuum cleaner for carpets which I have made a video of using it on YouTube https://www.youtube.com/watch?v=bxpNSzY47V8&t=6s&ab_channel=EmpnoiaCraftsandDIY. I bought this specific filter so that I don't need a bag for dry vacuuming, so the vacuum cleaner can do wet-dry vacuuming without modification. Even so, in wet vacuuming the vacuum cleaner needs cleaning after use.