21x21x1 Exact MERV 13 AC Furnace Filters

21x21x1 Exact MERV 13 AC Furnace Filters

Marsoni

M251S

$141.54

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

21x21x1 Exact MERV 13 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, smog and other contaminants. Ideal for customers looking for superior filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 13 is equivalent to MPR 2200 2400 Made in the USA. Nordic Pure MERV 13 Pleated AC Furnace Air Filters provide

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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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My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly. The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.

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Reviewed in the United States on April 25, 2026

Verified Purchase

Unnecessary

Bozeman, US

★★★★★ 5

Glad I switched

Super comfortable and have been very pleased with the quality and fit. It doesn’t feel like it’s made from one ply toilet paper which is great and doesn’t ride up. And for the price, I’ll be buying another set

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Reviewed in the United States on December 8, 2025

Verified Purchase

Sara

Charlottesville, US

★★★★★ 3

Very Large

Size: Large, Color: Multicolored-1-3901

These are comfy however they are very large, I would order down.

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Reviewed in the United States on November 27, 2023

Verified Purchase