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18x36x1 – Merv 13

18x36x1 – Merv 13
AC Furnace Air Filter
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Product Description

Filter Size: 18x36x1

Actual Size: 17.5×35.5×1

Actual Size Fraction : 17-1/2×35-1/2×1

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Shop 18x36x1 Air Filters Online

When looking for 18x36x1 air filters, cheap filters will always sound like a good idea. You need quality air filters to work with your HVAC unit and furnace to capture harmful particles coming in with the airflow.

Custom Filter Direct designed 18x36x1 air filters which help to keep almost all allergens away from your premises while making the indoor air clean and healthy. When it comes to performance, our air filters are second to none at blocking harmful sinus, irritation, and allergies coming with the outdoor air.

The unique design of these AC and furnace air filters makes them 30 times more efficient and last longer than any other air filters available on the market. Using our 8×35.5×1 air filters ensures you not only get rid of indoor air pollution but also get rid of odors that are not pleasant to your nose. These air filters will enhance the overall air quality while also enhancing the performance of your HVAC system.

When used for a long time, the dust gets accumulated on the surface of filters. The dirty particles accumulated block the filter’s pores over time. Custom Filters Direct recommends you to replace your air filters every 60-90 days.

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


These AC and furnace air filters trap 85% of the airborne particles 3.0-10.0 microns in size. We recommend MERV 8 filters for standard residential use.


MERV 11 air filters help maintain the superior indoor air quality in both residential and commercial environments. These filters capture more than 85% of the particles in the airstream while helping the HVAC unit work efficiently.


These air filters remove more than 90% of micron-sized contaminants from the airstream. MERV 13 filters are recommended for hospitals, industrial applications, surgery units, and others where superior air filtration is required.

Choose Your 18x36x1 Air Filters Delivery Schedule

Your 18x36x1 air filter is a vital part of your home’s HVAC system. With Custom Filters Direct’s subscription services, you can get a pack of new air filters delivered without placing an order again. We will send you a pack of 18x36x1 air filters at a time gap of your choice. So, you never forget to replace your air filters again. You can also place your order with our one-time delivery option and get huge discounts on bulk orders.