American Standard 21X27X1 FLR05050 Comparable AC/Furnace Air Filter (Made by American Filter Company™) Made in U.S.A - Walmart.com
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American Standard 24.5x27x1 MERV 11 Aftermarket Replacement Filter - FilterBuy.com
Glasfloss Industries FD12M1320221 20x22x1 MERV 13 HVAC Air Filters. Case of 12. Actual Size: 19-1/2 x 21-7/8 x 7/8
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