Incorrect image of the filter you purchased. If you look at the picture there are squares in the frame to let air through and stiffen the filter, but the holes are very small and the air will go through the filter about 1/3 and the frame limits the rest. In the photo, the square holes in the filter are large to allow air to pass unhindered, in fact the holes are very small. They are back and I will continue to use Nordic Pure as before. https://www.amazon.com/Nordic-Pure-10x10x1M10-2-Furnace-10x10x1/dp/B00FEHQM10?th=1 Watch the filter purchase video to see what the filters actually look like and compare them then with the images on the page at the very top of the page. You get the filters that are in the video, not the ones in the picture. Excessive clipping causes noise and hissing noises from the frame that jam the media.
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