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11.25x11.25x1 Air Filter Merv 8
11.25x11.25x1 AC Filter Merv 11
11.25x11.25x1 Furnace Filter Merv 13
11.25x11.25x1 Filter Merv 13 Titanium
11.25x11.25x1 Filter Merv 10 Carbon
11.25x11.25x1 Filter Merv 8 Carbon 11.25x11.25x1 Filter Merv 8 Carbon
Protects All Against
  • Pollen protection
  • Dust protection
  • Mold protection
  • Dust Mites protection
    Dust Mites
  • Bacteria protection
  • Pet Dander protection
    Pet Dander
  • Smoke protection
  • Viruses protection
  • Cooking Smoke protection
  • Odor protection
  • Smog protection
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11.25x11.25x1 Air Filter

AC Furnace Air Filter 11.25x11.25x1 -Inches

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Product Description

Item Model Number: FKFB11.25X11.25A
Brand: Filter King
Filter size: 11.25x11.25x1
Actual Size: 11.25 x 11.25 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, 11.25x11.25x1 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.

11.25x11.25x1 Air Filter Reviews

What MERV Rating should I choose?

How Often to Change Your 11.25x11.25x1 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.

11.25x11.25x1 Air Filter

Filter King 11.25x11.25x1 size air filters are able to protect your home against a wide range of airborne irritants. Your air filters are necessary to keep fresh coming in while any unwanted airborne particles become trapped or absorbed. Our filters consist of a tight mesh weave that will be able to prevent particles from passing through, but the particles will eventually build up and begin to fill the weave. Eventually, the mesh weaving will have stopped so many particles that the indoor air quality of a home is affected.

The dirty air filters in a system will only cause problems that grow worse the longer they go without a replacement. The airflow in a home needs to be able to pass through filters effectively or the resulting lack of airflow will begin to affect your home. Without fresh air, your home’s indoor air quality will lower as it begins to stagnate and dry out. Old air is not healthy to breathe in and may cause breathing problems over time. New Filter King 11.25x11.25x1 size air filters are able to provide fresh airflow and protection for a home. The filters rate as an eight on the MERV (Minimum Efficiency Reporting Value) scale, and are capable of blocking irritants like:

  • Pollen
  • Dust
  • Mold
  • Dust Mites
  • Bacteria
  • Pet Dander
  • Smoke
  • Viruses

11.25x11.25x1Air Filter Delivery

Dirty air filters need replacement before they are able to cause any problems for the indoor air quality of your home. Filter King offers fresh new filters at affordable costs that allow you to breathe in fresh airflow without issue. We offer a quality delivery service, with a subscription service that has new air filters arrive at your home regularly. Orders of two or more filters are even shipped for free, so order today and enjoy fresh airflow for your home!