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Aerostar 20x22 1/4x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 7/8" x 22 1/4" x 3/4") - Amazon.com
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Aerostar 20x22 1/4x1 MERV 8, Pleated Air Filter, 20 x 22 1/4 x 1, Box of 6, Made in the USA - Walmart.com
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