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Generalaire 4501 Furnace Filter 20x25x5. Actual Size 19 5/8" x 24 3/16" x 4 15/16" MERV 11 Aftermarket Case of 3.
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Generalaire 4551 Furnace Filter 20x25x5 MERV 11 for MAC 2000. Replaces Part # 4501 MERV 10. Actual Size 19 5/8" x 24 3/16" x 4 15/16." Case of 3.
York 20x25x5 Part # S1-MAC11202505. Actual Size 19 5/8" x 24 3/16" x 4 15/16" MERV 11. Case of 3.
