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18x20x1A – Merv 13

18x20x1A – Merv 13
AC Furnace Air Filter
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12+ $0.00

Product Description

Filter Size: 18x20x1A

Actual Size: 18x20x1

Actual Size Fraction : 18x20x1

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Buy 18x20x1A Air Filters Online

The airflow coming into your home or business from outside possibly carries a variety of harmful allergens to make the environment unforgettable for the residents. This is why your air system needs quality air filters to block the harmful particles from moving into your space.

With Custom Filters Direct 18x20x1A air filters, you can upgrade your air system to meet all your air filtration needs. All our air filters are designed using state-of-the-art technology to eliminate the most annoying particles like pollen, dust mite allergens, plant spores, pet dander, carpet fibers, and more.

Our 18x20x1A AC and furnace air filters feature a tight mesh weaving to deliver exceptional air filtration and better results than other ordinary air filters available on the market. These filters come with a heavy-duty frame that does not bend in extremely rough conditions. You can easily install these air filters without the help of a professional.

Custom Filters Direct recommends you to check the air filters regularly and change them every 60-90 days. Regularly changing your air filter is an easy way to keep your HVAC unit working efficiently, especially during peak seasons.

Select the Right MERV Air Filter


These filters are effective at removing 85% of airborne particles from the airstream. MERV 8 air filters work best in standard home conditions.


These filters are more efficient than MERV 8 as they can capture more than 85% of harmful contaminants sized 3 to 10 microns and will also capture 50% of allergens sized 1.0 to 3.0 microns.


These filters provide superior air filtration by trapping more than 90% of the air particles 3.0-10.0 microns in size and 75% of the air particles 0.3-1.0 microns in size.

18x20x1A Air Filters Delivery

Home or business, AC or furnace unit, our 18x20x1A air filters are available at a price you can’t find anywhere else. While choosing our 6, 12, and more-pack options, you can save some $$ on bulk orders of 18x20x1A air filters. You can choose our auto-delivery option to get a pack of new air filters delivered to your address at a regular interval. You can also choose the one-time delivery option to try our filters. So, choose the delivery option that suits your needs and place your order now!