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Your cart is empty.Product Description
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Measurement System
Minimum Efficiency Reporting Value (MERV)
Rates the ability of filters to trap particles on a scale of 1-20 (smallest microns captured at 20).
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Standard Protection (90%)
MERV 8 Air Filters
Perfect for almost any home or business that wants great indoor air quality at a reasonable rate.
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Superior Protection (95%)
MERV 11 Air Filters
Perfect for homes or businesses accounting for factors like pets, smokers, and allergy sufferers.
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Optimal Protection (98%)
MERV 13 Air Filters
Perfect for larger homes or businesses, and those who want the best possible filtration experience.
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Odor Eliminator (90%)
MERV 8 Air Filters with Activated Carbon
Perfect for homes or businesses that want to inhibit unpleasant smells with reliable MERV 8 quality.
Choosing the Correct Filter Size
Nominal Size vs. Actual Size
The nominal size is a shorthand number rounded to the nearest whole or half inch, normally in a larger font (ex: 16 x 20 x 1). Whereas the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (ex: 15.50 x 19.50 x 0.75). All filters have both.
Measuring Your Air Filter
If your current air filter does not have a dimension listed on the frame, use a tape measure to record the width x length x depth to find the actual size. Then round these measurements up to the nearest inch to find a corresponding nominal size, which will be easier to locate when searching online.
About Us
- The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
Better Air For All
Championing indoor air quality
At Filterbuy, we care about the air you breathe because we consider it the foundation for maintaining a healthy lifestyle. Cleaner air is always better, and we are firm believers that everyone, everywhere deserves to breathe it. This is why we work around the clock to ensure that you, your family, and your community have access to clean indoor air, free of allergens and pollutants, that enables you to routinely live free and breathe freely.
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Finding the Perfect Fit
No matter the size, we've got you covered
We now offer a variety of expert services and hundreds of custom air filter sizes that are compatible with a near infinite number of systems, because we know that when it comes to clean air, there isn’t a one size fits all solution. This enables us to always provide value with a quality product that empowers you to protect your home or business, regardless of your filtration needs.
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Green Means Clean
Refreshing new look, same great quality
Our new, green frames are constructed with the same high quality materials that you have grown accustomed to. We made the decision to switch to this greener design to help symbolize the peace of mind that comes from knowing your home or business is being properly cared for. When you see Filterbuy green, you can exhale with the confidence that you are breathing crisp, pure, fresh air.
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100% American Made
Local sourcing and manufacturing
From our first air filter produced in 2013, we have proudly built our business in the USA, now manufacturing in Alabama, California, Florida, Illinois, North Carolina, Pennsylvania, Texas, and Utah. This robust, homegrown network gives us the unique ability to swiftly fulfill diverse, custom orders directly to the doors of households and businesses across the country at premium rates.
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Subscribe and Save
Don't let changing your filter be a burden
The nature of air filters requires them be replaced regularly, but opting into a subscription service can help to simplify that process. All you need to do is find the right product and choose the delivery interval. We do the rest by making sure your filters arrive on time as requested. The majority of our Amazon catalog is already eligible for the program, and you even get a discount on every delivery when you enroll, making it an easy choice.
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Where We Came From
Nearly 70 years of giving back
Our small, family-owned and operated company has evolved since its inception in 1958 to the filtration business that you know and love today with thousands of employees serving millions of customers. As our team continues to expand to new neighborhoods across the country, we make sure to stay true to our values by keeping our commitment to community investment and personal aid at every possible opportunity.
Len Rosen
2025-09-03 13:09:36
It fits perfectly. Well constructed. Filters the air nicely. The price is right. I have been reordering these same filters for a number of years
dia daze
2025-08-26 18:24:15
So long 3M and your $20 filters! Hello FilterBuy!!!! These are made better than I expected!!!! I bought the 16x25x1, I read a lot of negative reviews saying a person got cut etc. I had my husband open the box, and film it just in case. The filters came in shrink-wrapped and packed safely in a large box. Only one of the filters had a little dent which is nothing to worry about. My furnace is brand new I would not put something that will cause a ridiculous amount of damage to my $10,000 brand new freon free units.[ For those of you who do not know this freon has been banned by the United States they are no longer making it nor are they importing it from anywhere.] [Companies are allowed to carry and use up what remains in their warehouses, however be prepared to pay an obscene amount of money for it. [The freon in cars is not the same and has not been addressed,nor appliance's, hence my new units.] These filters are sturdy the wires are not razor sharp the wire mesh is made as expected. You would have to take the filter apart to get to the metal mesh piece that keeps the filter together while the intake and the outtake work in tandem. I used to buy 3M filters and those cost a pretty penny I found these to be a lot better made A whole lot easier to fit and the price is absolutely amazing! I don't know how a reviewer said it left a deep cut unless you remove the metal mesh with the express purpose to gouge or cut yourself I cannot imagine that anyone using these filters for nothing other than what it is intended for. My old unit used the same size filter I never had a problem with any of them. The filters are as described and then some they are very well-made and if I were to buy the allege "better brand" or rather a more expensive one I would pay about $35 for just one. Everyone is going to have their own opinion about these filters and I respect that. I have used this size for over 15 years I have not had an accident removing an old filter to replace with a new thank God. I will definitely re-order these when I am done with the ones that got here today. I'm still ridiculously giddy at the great quality and how well made these are. My husband removed the old 3M filter I compared it with FilterBuy and was taken aback at how much better the quality and sturdier FilterBuy is. I set the 3M next to the FilterBuy, I just noticed the 3M is so flimsy, I can't imagine why I bought it, the dust would have gotten caught on the out take. A huge danger for me since I have asthma and COPD. In pics 5 and 6 I'm showing the new 3M on the left versus the new FilterBuy on the right. Keep in mind the 3M filter does NOT make a back mesh which results in the dust etc coming back on the return. In the last 2 pics you can see a little dent on the new filter, it slid right in without a problem. Tiny dent DOES NOT compromise the efficiency of the unit or its other counter parts. A little dent, ding,dong,dang, or pleated crease is not a major issue, a little 'scooch' 'scrunch' 'jiggle' and teeny tiny 'shove' will fix that right up. Bottom line, we got more bang for our buck with FilterBuy. Finally, here's where I say......THANK GOD FOR AMAZON PRIME.... they bring the solution to you in one day, without the hassle of standing in line!
Christine
2025-08-20 12:13:54
If I go to the hardware store to get these I pay for two for allot more than this pack of them. I can only get this size from the hardware store until I found them on Amazon what a great bargain they are. They fit perfectly and last just as long.I have to change it more often do to pet hair. Being able to get these at this great price is a Godsend.
Customer
2025-08-19 15:46:42
They just work great.
Mac
2025-07-26 13:15:35
competitive pricing and quality filters delivered fast.
Anthony Roach
2025-06-18 16:31:37
MERV rating of 8 compared to Home Depot MERV 5 at a price 15% lower! Well constructed and next day delivery. QUALITY AND VALUE!!!
JOHN SMITHYMAN
2025-06-11 15:17:23
This size filter is somewhat unusual and my system only fits filters that are EXACTLY the right size. Since we live in Florida and use either heating or cooling year around, it's important to me to change the filters every two months.Now that I've found the exact sized filter and it's always in stock, I don't have to scrounge around to find what I need and over buy when I do. I simply order the Filterbuy 16.38x21.5x1 Air Filter MERV 8 Dust Defense (6-Pack) annually and I'm good for the year.
W. J.
2025-04-21 16:20:13
Fit correctly and good quality. Had a small hiccup with order but seller remedied issue within 24 hours no questions asked. Would definitely recommend
Jeff Connell
2025-02-16 15:17:04
I've been using these filters for 18 months now with no issues. They are every bit as good as the name brand filters at a better price. Would purchase these again.
K K
2025-01-30 13:24:25
16 inch wide by 21 inch long measured and a bit over 3/4 inch deep
Kikino
2025-01-10 19:32:12
Perfect fit and very good quality ðŸ‘
John A Walsh
2024-12-08 11:41:25
They are oversize and do not Fitz!
Zaira Shteto
2024-11-16 16:41:16
Very good quality and on time
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