Quote:
Originally Posted by Keefelane66
I didn't know there was an expectation date on non woven material.
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The Merv 11 filters collect a little more dirt than the standard Merv 8, but I have found them to make the house less dusty and more quiet, and they don't seem to adversely affect the fan speed. But, I would not trust any filter for 12 months. FilterBuy is a good brand to buy on Amazon.