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12x18x1 – Merv 11

12x18x1 – Merv 11
AC Furnace Air Filter
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4-5 $0.00
6-11 $0.00
12+ $0.00

Product Description

Filter Size: 12x18x1

Actual Size: 11.5×17.5×1

Actual Size Fraction : 11-1/2×17-1/2×1

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Shop 12x18x1 Air Filters Online

Custom Filters Direct 12x18x1 air filters offer superior filtration to address today’s indoor air quality problems. These air filters are a great choice for the removal of nuisance contaminants such as pollen, paper dust, fumes, smoke, bacteria, fungi, virus, and other atmospheric impurities. Made in the USA, our 12x18x1 air filters will capture more than 90% of harmful airborne allergens, including those which are detrimental to your lungs.

Equipped with superior quality material, these AC and furnace air filters guarantee to capture microscopic particles and ensure a clean breathing environment. These efficient air filters are designed to provide great value and last longer than any other air filters available on the market.

So, don’t drive around town looking for a local hardware store. Order online and we will quickly ship to your front door!

MERV 8, MERV 11, MERV 13 Rated 12x18x1 Air Filters


We recommend MERV 8 air filters for standard residential use. These air filters will capture up to 85% of particles between 3.0 – 10.0 microns in size.


MERV 11 air filters are the most commonly used air filters for both residential and commercial spaces. These air filters will capture more than 85% of air particles 3-10 microns in size, along with more than 50% of the particles down to 1 micron in size.


MERV 13 air filters are the best choice when your main concern is adding protection against allergens and minimizing the number of dust particles in the air while improving indoor air quality. These filters will capture more than 90% of particles between the size of 3.0-10.0 microns and will also eliminate more than 75% of air particles 0.3 – 1.0 microns in size.

Air Filters Delivery

Custom Filters Direct offers an automatic delivery option on 12x18x1 furnace and HVAC filters, so you never have to worry about forgetting to install a new filter again. Simplify tell us the once how many you need and when you need them, the rest we will handle. We will send new air filters directly to your door based on the recommendations and schedule.

We also offer huge discounts when you purchase air filters in bulk. You can buy a pack of 4, 6, 12, or 120+ air filters and save a lot of $ on every order. Order now!