The parts appear to be of the same quality as those that came with the robot. So far I have used an air filter replacement as well as a sponge filter. They fit and look like the originals. A paper air filter can't be washed, so after a while simply banging it against the edge of a countertop wasn't enough to get it clean enough to use again. The sponge can of course be washed, but that way I can put on another one and continue cleaning without having to wait for the first one to dry. All in all a great deal and handy to take away.
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