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- $51.992 Pack 401 Furnace Filter Replacement Compatible with AprilAire 2400, Space-Gard 2400 Whole-House Air Cleaner Purifiers - MERV 13, 16x25x6 Air FilterAmazon
- $11.9618 in. x 24 in. x 1 in. Standard Pleated Furnace Air Filter FPR 5, MERV 8 (3-Pack)The Home Depot
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