Everything went perfect as a buyer of this spare part. Some people have mentioned that it didn't come with a charcoal filter, but that's normal as you'll need to clean or replace that filter regularly - say monthly - while a HEPA filter can only replace it after 6 or 12 months. even longer. My biggest problem was assembling the filter in vacuum due to its poor design. Inside the tray was a piece of plastic that may have been slightly bent. and it was impossible to change the assembly. The last solution, cutting off the top of the filter that needs to be moved at the very end. I looked at other models, and such a complex solution was not there. So I think it has something to do with this model. This is my advice for those who use this filter in the WindTunnel 2 vacuum cleaner.
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