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- $49.9820 x 25 x 5 Pleated Furnace Air Filter FPR 8, MERV 10 (2-Pack)The Home Depot
- $64.96Filter King 21x21x1A Carbon Air Filters | 4 Pack | Carbon MERV 8 HVAC Pleated AC Furnace Filter | Actual Size: 21 x 21 x .75"Amazon
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