21x21x1 Exact MERV 12 AC Furnace Filters

21x21x1 Exact MERV 12 AC Furnace Filters

Marsoni

M251S

$79.21

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

21x21x1 Exact MERV 12 AC Furnace FiltersActual Size: 21 x 21 x 3 4 (21 x 21 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure MERV 12

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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I have the Casio W-218 (which is still kicking) and wanted an upgrade. This model has everything I need; full date, more water resistance, mineral glass, and is aesthetically pleasing. The 10 Year Battery is an added bonus. Like most Casio watches this one is easy to set up and use. Fits great on the wrist and functions very well. I plan on buying a replacement strap eventually but I expect no issues from the watch itself.

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Reviewed in the United States on January 22, 2026