View 1 of 2-Pack 20x20x4 Replacement Air Filter for Honeywell FC100A1011, Lennox X0585 MERV 13 Allergy & Dust Defense, Pleated HVAC AC Furnace Filters(Actual Size: 19.94 x 19.75 x 4.38 Inches)

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View 1 of 2-Pack 20x20x4 Replacement Air Filter for Honeywell FC100A1011, Lennox X0585 MERV 13 Allergy & Dust Defense, Pleated HVAC AC Furnace Filters(Actual Size: 19.94 x 19.75 x 4.38 Inches)View 2 of 2-Pack 20x20x4 Replacement Air Filter for Honeywell FC100A1011, Lennox X0585 MERV 13 Allergy & Dust Defense, Pleated HVAC AC Furnace Filters(Actual Size: 19.94 x 19.75 x 4.38 Inches)View 3 of 2-Pack 20x20x4 Replacement Air Filter for Honeywell FC100A1011, Lennox X0585 MERV 13 Allergy & Dust Defense, Pleated HVAC AC Furnace Filters(Actual Size: 19.94 x 19.75 x 4.38 Inches)