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If you know the model number of the filter you are replacing, enter it here. By entering a part number we can limit your selection to only those filters we know to be compatible.
21½ x 21 x 5" BAYFTAH21M
Regularly replacing your air filter will help improve the efficiency and longevity of your furnace.
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Refrigerator Water Filter Tip #5:
It’s a good idea to smear some food-grade silicone on the rubber rings at the end of your filter.