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16x21x1 Air Filter Merv 8
16x21x1 AC Filter Merv 11
16x21x1 Furnace Filter Merv 13
16x21x1 Filter Merv 13 Titanium
16x21x1 Filter Merv 10 Carbon
16x21x1 Filter Merv 8 Carbon 16x21x1 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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16x21x1 Air Filter

AC Furnace Air Filter 16x21x1 -Inches

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Odor Eliminator

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Product Description

Item Model Number: FKFB16X21
Brand: Filter King
Filter size: 16x21x1
Actual Size: 15.5 x 20.5 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, 16x21x1 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.

16x21x1 Air Filter Reviews

What MERV Rating should I choose?

How Often to Change Your 16x21x1 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.

16x21x1 Air Filter

Filter King 16x21x1 size air filters keep irritants out while also allowing fresh airflow flow inside to cycle throughout your home. Your home’s indoor air quality depends on active filtration, otherwise the air pumping inside may contain all kinds of pollutants or allergens. Dirty air is not comfortable or safe to breathe, which makes having clean air filters a priority for any air system. Your air filters will help clean up the incoming airflow, but they become dirtier over time, and thus less efficient.

Your home air filters require regular maintenance to avoid some of the problems that otherwise develop for your systems. Dirty air filters are a growing problem, they only continue to grow dirtier and cause increasingly worsening problems for your home. Airflow is unable to pass effectively through dirty air filters which leads to the air inside your home stagnating and drying out. The air systems will also begin using more energy as they try to bypass the blockage by increasing airflow. The rising energy usage leads to additional costs and possible mechanical damage.

Filter King air filters are manufactured with balance in mind, keeping incoming airflow clean but also allowing it to pass without incident. New 16x21x1 size air filters will help keep airflow coming in and make sure that your air filters are working to their full capacity. The air filters have a MERV (Minimum Efficiency Reporting Value) rating of eight. The MERV rating of a filter will tell you what particles they can block out, our particles are able to prevent entry to irritants like:

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

16x21x1 Air Filter Delivery

Filter King 16x21x1 size air filters are affordable enough to allow you to maintain a regular replacement schedule. We also have the filters delivered straight to you, with orders of two or more filters shipped for free. We also offer a subscription service to have new filters delivered on a regular basis to match your replacement schedule. Order now and have new air filters help ensure fresh airflow for your home.