Filter King 21x22x1 Air Filter MERV 8， AC Furnace Filters (12-Pack) - (size: 21x22x1)，

4.6 out of 5 stars (726 ratings)

$101.74~~$113.04~~10% off

Price as of Nov 9, 10:07 AM UTC

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Filter King 21x22x1 Air Filter MERV 8， AC Furnace Filters (12-Pack) is $101.74 at Amazon, 10% off the usual $113.04. Listed as of Nov 9, 10:07 AM UTC.

Prices and availability are accurate as of the time shown and can change. The price and availability shown on Amazon at the time of purchase apply.