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20×21.5×1 – Merv 11

20×21.5×1 – Merv 11
AC Furnace Air Filter
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Product Description

Filter Size: 20×21.5x1A

Actual Size: 20×21.5×1

Actual Size Fraction : 20×21-1/2×1

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Buy 20×21.5×1 Air Filters Online

Custom Filters Direct 20×21.5×1 air filters will help keep your home clean and healthy. When you use these air filters, you’ll notice that there’s less dust in the air. This will make it easier for you to breathe, which can help prevent respiratory issues like asthma and allergies.

Our 20×21.5×1 air filters come with electrostatically charged synthetic media that captures more than 90% of the particles. The filters help reduce the spread of mold and bacteria in the home. They can be especially useful for people with allergies or asthma who are especially sensitive to airborne allergens. These air filters also help reduce humidity levels in the home, which can help reduce mold and mildew growth.

Designed with tight mesh weaving, these air filters can provide protection against many airborne particles that can aggravate seasonal allergies. Our 20×21.5×1 air filters capture particles like pollen, dirt, dust, mites, pet dander, smog, and more. Furthermore, they will smoothly fit into residential and commercial applications while delivering superior air filtration.

Why Is Changing Your 20×21.5×1 Air Filter important?

Your family’s comfort and health are of the utmost importance. And replacing your AC and furnace filter is one of the best ways to ensure that your family is protected against harmful air pollutants.

If you leave the air for months, it will get clogged with dust, dirt, and other germs that pose a direct threat to your family. In addition, dirty filters reduce the HVAC unit performance and push harder to pass the quality airflow. We advise you to replace your air filter every 2 to 3 months. It will not just prolong the life of your HVAC system but also reduce energy bills.

We have MERV 8, MERV 11, and MERV 13 Filters


MERV 8 filters improve indoor air quality by catching 85% of the airborne particles 3.0 – 10.0 microns in size. These AC and furnace filters are actually good enough for standard household settings.


MERV 11 filters fit both residential and commercial environments. These filters capture more than 85% of the large particles and 50% of the small size particles.


These air filters help you to enjoy clean, healthy air every day by capturing more than 90% of the particles 3.0-10.0 microns in size, as well as 75% of the particles 0.3-1.0 microns in size.

20×21.5×1 Air Filters Delivery Services

Custom Filters Direct is the name you can count on when looking to buy quality 20×21.5×1 air filters online. To make your purchase simple and easy, we offer a subscription service. Once you subscribe, you will get a pack of new filters on a fixed interval of your choice. We also provide one-time delivery services. All of our air filters come in packs of 4, 6, 12, and more. Make your purchase now!