21 1/2" x 21 1/2" x 4" MERV 13 - Pleated Air Filter
21 1/2x21 1/2x4 MERV 13 - 6 PK - Ultimate Allergen Furnace & AC Air Filters

21 1/2x21 1/2x4 MERV 13 - 6 PK - Ultimate Allergen Furnace & AC Air Filters

2521 reviews

save $40.27
Regular price
$201.32
Sale price
$161.05
Unit price
per 



Protects from Dust, Lint, Pollen, Mites, Mold, Pet Dander, Viral Infections, Bacteria, and other allergens.

This is currently the highest rated filter!

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21 1/2" x 21 1/2" x 4" MERV 13 - Ultimate Allergen Reducing Furnace & AC Air Filter Replacements - 6 Pack

Actual Dimensions: 21 1/2" x 21 1/2" x 3 3/4"

21 1/2" x 21 1/2" x 4" MERV 13 - Ultimate Allergen Reducing Furnace & AC Air Filter Replacements - 6 Pack

Actual Dimensions: 21 1/2" x 21 1/2" x 3 3/4"

Customer Reviews
4.9 Based on 2521 Reviews
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Filter Reviews:
SV
12/26/2020
Suzanne V.
United States United States
I recommend this product
High tech filter

Easy to install, fit perfectly. Very happy with item.

DM
10/14/2020
Debra M.
United States United States
I recommend this product
Very satisfied

Fit perfect. Great price

MH
10/05/2020
Mark H.
United States United States
I recommend this product
Great Product & Service

My older ductwork was made with an odd filter size, not available at any big box store. Really pleased to find these filters at a reasonable price.

GR
09/23/2020
Glenn R.
United States United States
I recommend this product
Looks GREAT!

Fits my heater perfect! Looks to be very good quality. We haven't used the heater yet but my guess is once it's time this product will function perfect.

MI
08/14/2020
Martha I.
United States United States
I recommend this product
6x24x1 filters.

The filters are working great. So glad I found them and they were delivered so fast.



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