I have had genuine Shark filters before. I realized that I had made a deal on this product. SIGNIFICANTLY reduces the suction power of the vacuum cleaner. It has trouble removing even light kitty litter on a bare floor. I made a filter out of an old filter bag from another vacuum cleaner and one of these filter frames and the result was a huge improvement. I will not buy again. The only plus of this product is the price and the very tight fitting of the filters.
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