Don't buy these filters they look nice and fit perfectly on the master vacuum cleaner and when they get full and dirty go wash them with water and dry them If you find that the paper filter is of poor quality and the paper just creases and the filter breaks, I now buy a filter that I can use over and over again and the way you clean the filter is by flushing it with water wash, or at least that's how I clean. Therefore, these filters cannot absorb water, which means they are very difficult to clean, making them virtually useless. I would ask Revain to return my money but I'm not sure they will honor that request.
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