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18x30x1 – Merv 8

18x30x1 – Merv 8
AC Furnace Air Filter
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Product Description

Filter Size: 18x30x1

Actual Size: 17.5×29.5×1

Actual Size Fraction : 17-1/2×29-1/2×1

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Shop 18x30x1 Air Filters Online

Indoor air pollution can be even more harmful than outdoor air pollution. Superior quality air filters are required to add a layer of protection for everyone to enjoy clean, healthy indoor air.

With the help of the Custom Filters Direct 18x30x1 air filters, you can easily maintain indoor air quality while keeping most bacteria and irritants out of your home or business environment. These air filters are the perfect fit for any home or office HVAC system, eliminating more than 90% of the unhygienic particles coming with the airflow.

Custom Filters Direct 18x30x1 air filters also prevent the build-up of harmful airborne particles on your duct that can affect the performance of the unit.

All of our AC and furnace air filters are manufactured in the USA with the highest quality materials, making them an affordable choice for residential, commercial, and industrial areas. Our air filters feature a tight mesh weaving to capture even smaller particles that ordinary filters won’t.

Though our air filters are designed to promote clean airflow, dirt may start building up on the surface of filters after a few months. Using dirty air filters will not allow the clean air to pass through, and will also put a strain on the HVAC motor. So, we recommend you change your air filters every 60-90 days.

MERV 8, MERV 11, MERV 13 18x30x1 Air Filters


These AC and furnace air filters are an ideal choice for your residential air systems to improve indoor quality. MERV 8 filters will catch 85% of the airborne particles 3.0 to 10 microns in size.


MERV 11 air filters block more than 85% of airborne particles of 3.0 to 10 microns in size and 50% of the particles 1.0-3.0 microns in size. These filters are more effective at controlling dust, pollen, dust mites, and other particles than MERV 8 filters.


MERV 13 air filters capture more than 90% of the particles 3.0-10.0 microns in size and 75% of the particles 0.3-1.0 microns in size, making them an ideal choice for commercial and industrial applications.

Choose Your 18x30x1 Air Filters Delivery Schedule

Custom Filters Direct offers a subscription service, also called auto-delivery service, that allows you to receive a pack of new air filters at a time interval of your choice. This auto-delivery works as a reminder for you to change your air filter. All our air filters come in packs of 4, 6, 12, 48, and more.

We also offer one-time delivery of 18x30x1 air filters for those who like to try our air filters before subscribing to auto-delivery.

Do you need to place a bulk order for 18x30x1 air filters? We have got you covered. Place your order now and get special discounts.