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Metal Filter Frame with 6 Blue/White Pads 20 x 23 x 1 [FF20231-B] : HVAC Parts Online, Heating and Air Conditioning Parts
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Filterbuy 20x23x1 MERV 8 Pleated HVAC AC Furnace Air Filters (2-Pack) - Walmart.com
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Filterbuy 20x23x1 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 22.50 x 0.75 Inches) - Replacement Furnace Filters - Amazon.com
