21x21x1 MERV 12 Plus Carbon AC Furnace Filters

21x21x1 MERV 12 Plus Carbon AC Furnace Filters

Marsoni

M251S

$112.15

Get it in 3 business days with 1 day shipping. Friday, May 29

21x21x1 MERV 12 Plus Carbon AC Furnace FiltersActual Size: 20 3 4 x 20 3 4 x 3 4 (20. 75 x 20. 75 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. Ideal for customers who not only need odor control but whose daily life demands high filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500

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Fast: 2-3 business days
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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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I had an experienced handyman attach the wheels, and even he was confused since the instructions are poor. So allow yourself some extra time to assemble the wheels. However, once attached and placed upright, the wheels are smooth and its very easy to position. And it folds up into a small footprint just as advertised. Looks great. No issues with quality.

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Reviewed in the United States on March 16, 2026