The product is designed according to the manufacturer and works well. I change the filter every 30 days and the one that is replaced picks up a lot of dust. For those who have complained that the metal mesh in the filter was razor sharp, it is thin metal that has been cut. Have you ever worked on installing HVAC ducts? The same thing. The edges are really sharp. Be careful when opening the packaging. I will continue to buy this product as it fits and works well.
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