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Pollen
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Dust
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Mold
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Dust Mites
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Bacteria
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Pet Dander
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Smoke
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Viruses
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Cooking
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Odor
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Smog
{{ filter_count }} Pack of
11.75x13.5x1 Air Filter
AC Furnace Air Filter 11.75x13.5x1 -Inches
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1. Select Filter Quality

Standard
MERV 8

Good
MERV 11

Better
MERV 13

Odor Eliminator
2. Select Quantity
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Select the number of filters
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Product Description
Item Model Number: FKFB11.75X13.5A
Brand: Filter King Filter size: 11.75x13.5x1 Actual Size: 11.75 x 13.5 x .75 1-Inch Filter MERV 8 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Manufactured in the US
Why Buy Air Filters From Filter King?

In comparison to fiberglass filters, 11.75x13.5x1 pleated air filters are at least 20 times more effective. All Filter King air filters are made in the US.

Filters frames are made out of heat resistant paperboard with horizontal grid supports. Able to withstand temperatures of up to 200° F and resistant to moisture, the paperboard frames do not support microbial growth and outperforms traditional cardboard frames.

Chemical free, electrostatically charged synthetic polyester media is pleated, maximizing the surface area, to capture a high number of airborne particles as small as 0.3 microns with low air flow resistance. To increase durability, the media is supported with a corrosion resistant steel wire.
11.75x13.5x1 Air Filter Reviews
What MERV Rating should I choose?
How Often to Change Your 11.75x13.5x1 Air Filter?
Filter King AC & furnace filters aren’t the typical fiberglass filters that need to be replaced every 30 days. Our filters can typically be used for 3 to 5 months before requiring to be changed. Naturally, a variety of things influence filter lifespan.
Some of the factors that influence your filter’s life include outdoor air quality, whether pets are in the home, and how well your HVAC system is maintained.
Your air filter becomes clogged over time by trapped particles, preventing airflow. The efficiency of the HVAC filter declines. Your system must work harder to heat and cool your home. The extra strain on the HVAC system causes higher energy bills. Regular home air filter replacements can prevent expensive system repairs or replacements down the road.
You should change your filter more frequently if you notice:
- Household dust build-up
- The air isn’t cooling as is used to
- There’s more dust near the air vents
- A dirty filter surface
- Higher energy bills
- Burning smells near your HVAC system.
11.75x13.5x1 Air Filter
Filter King 11.75x13.5x1 size air filters are useful tools to keep fresh airflow coming in while airborne irritants stay out. The irritants are blocked by your air filters tight mesh weaving, the captured particles are stopped while the cleaned airflow comes through. The clean air that cycles into your home provides a fresh smell, while the old air is cycled out to prevent any issues. Over time, your air filters become covered in the captured particles and become a problem for indoor air quality.
Dirty air filters are a problem for a home due to their inability to let air flow pass through easily. Over time, the lack of airflow will cause the air in your home to dry out and stagnate, which makes it uncomfortable and unhealthy to breathe in. Your air filters need maintenance to avoid any strain on their air systems as well, which grows worse and causes a rise in billing. New air filters will provide protection and allow airflow to pass without incident. Our 11.75x13.5x1 size air filters rate as an eight on the MERV (Minimum Efficiency Reporting Value) scale, and are capable of blocking our particles like:
- Pollen
- Dust
- Mold
- Dust Mites
- Bacteria
- Pet Dander
- Smoke
- Viruses
11.75x13.5x1 Air Filter Delivery
The dirty air filters in your home need replacement, and Filter King offer quality air filters at affordable prices. We are able to deliver your filters right to your door, with our subscription service you can see a new air filter arrive as often as monthly. Bulk orders also come with discounts, orders of two or more filters are shipped for free. Order today and enjoy fresh airflow for your home.