One of our main concerns when replacing the oven was the efficiency and cost of the filter which had to last up to 6 months. This is the exact same filter that came with our oven and the price wasn't as bad as we expected. The filter itself did an excellent job of keeping dust and pollen out of our air ducts, as evidenced by the amount of dust and pollen trapped in the folds. We switched after 6 months but I think we could extend it a few more. The filter was very easy to replace.
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