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20 x 25 x 4 Air and Furnace Filters
Our 20x25x4 air filters can not only help rid the air of allergens and other particles, but also from fumes in your home caused by gasses or chemicals, as well as smoke and tobacco. When looking at the best filter for your home, checking the MERV rating is important, as it is a measurement of how small of particles a filter can trap. MERV ratings range from 1-16, with 1 being the most common, disposable panel type filter and 16 being the most efficient filter, commonly found in hospitals and other super clean environments. All of our 20x25x4 filters have a MERV rating of over 8, which means they are a better choice than the most common home filters, and some can stop particles as small as .3 microns, which leaves a super clean environment for you and your family to enjoy. These filters can stop everything from fine dust, mold spores, dust mite debris, pet dander, pollen, auto emissions, bacteria, sub-pollen particles, to other air pollution.
As an added bonus, order today and receive Free Shipping on all air filter orders!
NOTE: Several brand replacements may be listed below. All filters on this page are compatible with each other. Each brand replacement is listed separately to provide you with corresponding part/model numbers for that specific filter.
Click on the + under "Details" below to see complete details about the filter.
Click here to view the Filter Comparison Chart
Enter a Quantity and click the "Buy" button.
| Details | Brand / Actual Size | MERV | Price / Filter | # Filters | Price / Case | Cases |
 | SC40 |
| | A MERV 8 rating will protect your equipment and capture:
- Settling/Average Dust Particles
- Mold Spores
- Dust Mite Debris
- Pet Dander
- Pollen
Captures large amounts of dust and common allergens
Ideal for those with mild allergies
Made with heavy-duty materials to provide a sturdy filter
Available in custom sizes
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| 19‑1/2" x 24‑1/2" x 3‑3/4" | MERV 8 | $13.00 | 3 | $39.00 | |
| Details | Brand / Actual Size | MERV | Price / Filter | # Filters | Price / Case | Cases |
| Baking Soda |
| | A MERV 8 Baking Soda Pleated Filter is recommended for mild odors and will protect your equipment and capture:
- Settling/Average Dust Particles
- Mold Spores
- Dust Mite Debris
- Pet Dander
- Pollen
Take a look at the features below to see if a Baking Soda Air Filter is a good choice for you!
Sodium Bicarbonate-Infused media to help neutralize common household odors Captures large amounts of dust along with common allergensIdeal for those who want to freshen the air and deodorize mild odorsAlso suitable for those with mild allergies
Made with heavy-duty materials to provide a sturdy filter Not available in custom sizes
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| 19‑1/2" x 24‑1/2" x 3‑3/4" | MERV 8 - Baking Soda | $15.30 | 3 | $45.90 | |
| Details | Brand / Actual Size | MERV | Price / Filter | # Filters | Price / Case | Cases |
| Activated Carbon |
| | A MERV 8 Activated Carbon filter is recommended for severe odors and will protect your equipment and capture:
- Settling/Average Dust Particles
- Mold Spores
- Dust Mite Debris
- Pet Dander
- Pollen
- Tobacco Smoke
* Best recommended filter specifically for the removal of smoke odor from tobacco or fire and other severe and objectionable odors from fumes, gases, and chemicals
Effectively removes severe odors from tobacco smoke, pets, chemicals, gases, and other strong household odors
Captures large amounts of dust and common allergens
Ideal for those who need to control serious odors
Also suitable for those with mild allergies
Made with heavy-duty materials to provide a sturdy filter
Filter fragrances are not recommended as carbon absorbs fragrances
Not available in custom sizes
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| 19‑1/2" x 24‑1/2" x 3‑3/4" | MERV 8 - Carbon | $20.67 | 3 | $62.01 | |
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