All filters are made in the USA + Free Shipping on orders over $50

Call Us C877.570.9755

16.25x21x1 Air Filter Merv 8
16.25x21x1 AC Filter Merv 11
16.25x21x1 Furnace Filter Merv 13
16.25x21x1 Filter Merv 13 Titanium
16.25x21x1 Filter Merv 10 Carbon
16.25x21x1 Filter Merv 8 Carbon 16.25x21x1 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
{{ filter_count }} Pack of

16.25x21x1 Air Filter

AC Furnace Air Filter 16.25x21x1 -Inches

1. Select Filter Quality

Odor Eliminator

2. Select Quantity

${{ money(priceWithoutDiscount()) }} Save ${{ money(savePrice()) }} ({{ savePercent()}}%)


Product Description

Item Model Number: FKFB16.25X21A
Brand: Filter King
Filter size: 16.25x21x1
Actual Size: 16.25 x 21 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, 16.25x21x1 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.

16.25x21x1 Air Filter Reviews

What MERV Rating should I choose?

How Often to Change Your 16.25x21x1 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.

16.25x21x1 Air Filter

Filter King 16.25x21x1 size air filters are made of a tight mesh weaving designed to keep indoor air quality up and irritants out. Air filtration is a necessary part of any system, used to keep the airflow coming in free of harmful particles. If the airflow is not cleaned up, then there is no telling what sort of pollutants and allergens are capable of entering your home via airflow. The air filters keep the incoming air clean, but become dirtier and less effective over time.

The air filters in your systems are important, but they do not last forever, they will eventually require replacement. Air systems with dirty air filters will eventually become problems that affect your home as a whole. Your air systems are unable to fully process airflow, forcing the system to use more energy in an attempt to bypass the blockage. The spike in energy usage pushes your air systems to dangerous degrees and may lead to higher billing and possible mechanical damage.

Your air systems benefit from having new filters installed, allowing for fresh air to pass through into your home without issue. Filter King offers new 16.25x21x1 size air filters at affordable rates to make regular filter replacement easier to maintain. Our air filters also have a MERV (Minimum Efficiency Reporting Value) rating of eight. With a rating like that, the air filters are capable of blocking out irritants like:

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

16.25x21x1 Air Filter Delivery

Filter King offers quality air filters services, allowing air filters to be delivered straight to your home. Orders of two or more filters are shipped for free, and we also have a subscription option to have new filters brought to you regularly. Enjoy our discounts and affordable pricing, order today and help keep the incoming airflow clean and clear of irritants that would affect your home's indoor air quality.