



20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air FiltersActual Size: 19 5 8 x 19 7 8 x 4 3 8 (19. 63 x 19. 88 x 4. 38) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Replaces Honeywell 20x20x4 and filters with an MPR rating with an actual depth of 4 3 8 and ideal for high efficiency air filtration and those with moderate allergies Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame.
Quick Dispatch:
Your 20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Product Reviews
★★★★★ 4
It filters air.
Color: CA9683
This apparently fits in a car to filter air to the car. I put it in mine. But I cannot see it. So IDK if is even still there?
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Reviewed in the United States on June 2, 2023
★★★★★ 5
Works
Works as it should.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Good and easy filter replacement
Filter was great and easy replacement
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Engine abd
Good quality, sturdy, and easy to install.
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Reviewed in the United States on September 7, 2025
★★★★★ 4
Working great
Both filters fit just right and are doing a great job.
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Reviewed in the United States on October 9, 2025