Aerostar 19 7/8 x 21 1/2 x 1 MERV 13 Furnace Air Filter, 6 Pack 192212039944 | eBay
13X21X1 - Flanders Precisionaire 13X21X1 - All Air Filters
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13" x 21.25" x 1" MERV 8 Air Filters - $16.39 Each!
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13 X 21-1/2 X 1 Lifetime Air Filter - Electrostatic Washable Permanent A/C Furnace Air Filter. 65% More Efficiency - China Nylon Filter, Air Filter | Made-in-China.com
Filterbuy 13x21.5x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters Replacement | Wayfair
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Aerostar 16 3/8x21 1/2x1 Merv 13, Health Air Filter, Box Of 4 : Target
Aerostar 13 x 21 1/2 x 1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack - Walmart.com
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Filtrete 13.5-in W x 21.5-in L x 1-in MERV 5 Basic Pleated Air Filter in the Air Filters department at Lowes.com
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Filtrete 13.5-in W x 21.5-in L x 1-in MERV 5 Basic Pleated Air Filter in the Air Filters department at Lowes.com
Dynamic C3P132112X 13 x 21 1/2 Air Filter
Merv 13 Pleated Air Filter - 21" x 21" x 1" – Any Kind Of Filter
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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
21x21x1 Tier1 Air Filter Replacement MERV 13 - (6-Pack)
