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HDX 21 in. x 21 in. x 1 in. Elite Allergen Pleated Air Filter FPR 12, MERV 13 61201.012121 - The Home Depot
Aerostar 19 7/8 x 21 1/2 x 1 MERV 13 Furnace Air Filter, 6 Pack 192212039944 | eBay
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Aerostar 13 x 21 1/2 x 1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack - Walmart.com
HDX 21 in. x 21 in. x 1 in. Elite Allergen Pleated Air Filter FPR 12, MERV 13 61201.012121 - The Home Depot
13X21X1 - Flanders Precisionaire 13X21X1 - All Air Filters
Filter King 13x21x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated AC Furnace Filters | Actual Size 13 x 21 x .75" - Amazon.com
Merv 13 Pleated Air Filter - 21" x 21" x 1" – Any Kind Of Filter
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13x21-1/2x1 Air Filter for Carrier/Bryant/Payne - Box of 4
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Dynamic C3P132112X 13 x 21 1/2 Air Filter
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Koch P8S1-130-214 - 13 x 21 1/2 x 1 MERV 8 Pleated Air Filter – 12-pac
13" x 21.25" x 1" MERV 8 Air Filters - $16.39 Each!
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13x21.5x1 Odor Eliminator Air Filter - Only $15.67/ea.
