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19×21.5×1 – Merv 13

19×21.5×1 – Merv 13
AC Furnace Air Filter
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Product Description

Filter Size: 19×21.5x1A

Actual Size: 19×21.5×1

Actual Size Fraction : 19×21-1/2×1

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Shop 19×21.5×1 Air Filters Online

One of the most important tools for maintaining clean air in your home and office is an air filter. Air filters are designed to trap small particles, such as pollen and dust, so they can’t enter your home.

Custom Filters Direct 19×21.5x1air filters help you maintain exceptional indoor air quality by eliminating more than 90% of particles from the air that can cause several health issues to the residents. These AC and furnace air filters are easy to install and replace.

All of our air filters are designed using state-of-the-art techniques. Their tight mesh weaving capture most of the smaller airborne particles. Our filters come with electrically charged media that has exceptional dust holding capacity.

Over time, these particles can build up in your air conditioner, causing it to work harder and be more prone to break down. Replacing your air filters can help you avoid this problem by keeping the pollutants out of your home. Custom Filters Direct recommends changing your furnace and HVAC air filters every 2-3 months for optimal performance of the HVAC unit.

Choose the MERV Rating


These AC and furnace air filters are a popular option for most residential customers. MERV 8 filters capture 85% of airborne particles 3.0 to 10.0 microns in size.


These air filters are an economical solution for both residential and commercial settings. MERV 11 filters capture more than 85% of particles between the sizes of 3.0 to 10.0 microns. They also capture 50% of particles 1.0 to 3.0 microns in size.


MERV 13 filters are an ideal option for hospitals, surgery units, and places where superior indoor air quality is required. These filters block and trap more than 90% of particles of 3.0 to 10.0 microns in size and 75% of the particulates 0.3-1.0 microns in size.

Order 19×21.5×1 Filters online

Custom Filters Direct delivers premium 19×21.5×1 air filters at affordable prices. We offer a subscription service to help you get a pack of new 19×21.5×1 air filters delivered to your front doors on a monthly basis. All of our air filters come in packs of 4, 6, 12, and more. We also offer a one-time delivery service. So, choose the delivery option that suits your needs and we look forward to delivering the best quality air filters to your doorsteps.