Manufacturer | Filterbuy |
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Part Number | AFB20x20x4M11pk2 |
Item Weight | 6 pounds |
Product Dimensions | 19.38 x 19.38 x 3.63 inches |
Country of Origin | USA |
Item model number | AFB20x20x4M11pk2 |
Is Discontinued By Manufacturer | No |
Size | 2 Count (Pack of 1) |
Color | Gold |
Style | 20x20x4 |
Finish | Electrostatic |
Material | Polyester, Aluminum, Plastic |
Pattern | Pleated |
Power Source | Gas-Electric |
Minimum Efficiency Reporting Values (MERV) | 11.00 |
Measurement System | English/Standard |
Mounting Type | Embedded |
Special Features | Easy to Install, Dust Collection, Removable |
Usage | Commercial/Residential |
Included Components | Air Filters |
Batteries Included? | No |
Batteries Required? | No |
Warranty Description | Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues. |
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Ships from: Filterbuy Sold by: Filterbuy
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Filterbuy 20x20x4 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.38 x 19.38 x 3.63 Inches)
Purchase options and add-ons
Brand | Filterbuy |
Material | Polyester, Aluminum, Plastic |
Product Dimensions | 19.38"L x 19.38"W x 3.63"Th |
MERV Rating | 11.00 |
Compatible Devices | Air Conditioner, Heat Pump, Air Cleaner, Furnace |
Item Weight | 6 Pounds |
Product Grade | Replacement Parts |
About this item
- 20x20x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19.38" x 19.38" x 3.63")
- MERV 11 synthetic media (comparable with MPR 1000 - 1200 & FPR 7) protects homes from pets, allergies, and more by trapping 95% of airborne particles without impacting air flow
- High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
- Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
- All components are manufactured within the United States and designed with recyclable materials
Customer ratings by feature
Frequently bought together
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From the brand
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At Filterbuy, we pride ourselves in being a one-stop shop for all of your air conditioner, furnace, or HVAC system filter replacements. This is why we offer over 600 custom sizes in a variety of filtration ratings to ensure that you can find the perfect fit, regardless of your unique needs. We do this in the pursuit of our goal to provide you, your family, and your community access to clean indoor air that enables you to live and breathe freely.
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What makes our products unique?
We offer premium features that provide an enhanced filtration experience via a pleated, electrostatic design that captures more particles and a reinforced beverage board frame that withstands extreme temperatures.
What problem are we solving?
We give customers the ability to simply purchase the exact filter size they need from the comfort of their homes. Plus, our robust supply chain ensures that we can deliver these custom sizes quickly at no extra cost.
Why do we love what we do?
We love being able to provide a service that helps keep our communities healthy.
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Product Description
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Measurement System
Minimum Efficiency Reporting Value (MERV)
Rates ability of filters to trap air particles on a scale of 1-20 (smallest microns captured at 20).
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Standard Protection (90%)
MERV 8 Air Filters (Silver)
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 (Gold)
Perfect for homes that want extra defense for factors like pets, smokers, or allergy-sufferers.
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Optimal Protection (98%)
MERV 13 Air Filters (Platinum)
Perfect for larger homes & businesses, and those who want the best possible filtration experience.
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Standard Protection (90%)
Odor Eliminator Air Filters with Activated Carbon
Perfect for homes that want to inhibit undesirable smells while maintaining reliable MERV 8 quality.
Replacement Air Filter 20x20x4 (Actual Size: 19.38 x 19.38 x 3.63 Inches)
20x20x4 MERV 11 | 20x20x4 MERV 8 | 20x20x4 MERV 13 | 16x25x1 MERV 8 (Popular) | 20x20x1 MERV 8 (Popular) | 20x25x1 MERV 8 (Popular) | |
Customer Reviews
|
4.5 out of 5 stars
950
|
4.6 out of 5 stars
2,142
|
4.3 out of 5 stars
1,649
|
4.7 out of 5 stars
11,804
|
4.7 out of 5 stars
13,425
|
4.7 out of 5 stars
8,000
|
Recommended Use
| Superior Home & Business | Standard Home & Business | Optimal Home & Business | Standard Home & Business | Standard Home & Business | Standard Home & Business |
Comparable Ratings
| MPR 1000-1200 & FPR 7 | MPR 600 & FPR 5 | MPR 1500-1900 & FPR 10 | MPR 600 & FPR 5 | MPR 600 & FPR 5 | MPR 600 & FPR 5 |
Filtration Effectiveness
| 95% Airborne Particles | 90% Airborne Particles | 98% Airborne Particles | 90% Airborne Particles | 90% Airborne Particles | 90% Airborne Particles |
Particle Size
| 1 - 3 Microns | 3 - 10 Microns | 0.3 - 1 Microns | 3 - 10 Microns | 3 - 10 Microns | 3 - 10 Microns |
Dust & Debris
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Mold & Pollen
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Lint & Dander
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Smog & Smoke
| ✔ | ✘ | ✔ | ✘ | ✘ | ✘ |
Bacteria
| ✘ | ✘ | ✔ | ✘ | ✘ | ✘ |
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 16 x 1). Whereas the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (ex: 15.75 x 15.75 x .75). All filters have both.
Measuring Your Air Filters
If your current air filter does not have a dimension listed on the frame, use a tape measure to record the length x width 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.
Why should I change my air filter?
To maintain a healthy lifestyle, as breathing dirty air can put you at risk to develop asthma, allergies, and other respiratory ailments. Plus, old filters can cause system defects which may lead to unwanted expenses via energy costs and repairs.
Will these air filters fit my system?
Most of our filters are universally compatible, and will work with virtually any furnace, air conditioner, heat pump, or HVAC system. But if you see a specific brand name like Honeywell within a product title, then it is designed for an exact model.
How do I change my air filter?
Once you find the right size, turn off your power supply and remove the cover from your intake vent. You can then take out the old filter and dispose of it safely. Finally, just insert your new filter, replace the cover, and turn the power back on.
How often should I change my air filter?
We generally recommend replacing your filter every 90 days to keep your system running efficiently and air clean. But, this is subject to change based on filter size and variable factors for pet owners, allergy-sufferers, homes with children, etc.
How many air filters do I need?
This varies for every customer depending on specific needs like those referenced in the prior answer. However, our selection includes package quantities that range from 1 to 12 filters, so no matter what your situation may be, we've got you covered.
About Us
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Live Free and Breathe Freely
Our commitment to you
At Filterbuy, we care about the air you breathe because we know how important it is to maintaining a healthy lifestyle. This is why we work around the clock to assure that you, your family, and your community have access to clean indoor air, free of allergens and pollutants, that enables you to always live free and breathe freely.
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Over 600 Custom Air Filter Sizes
No matter the size, we have what you're looking for
We now offer more than 600 different custom air filter sizes, because we know that when it comes to clean air, there isn’t a one-size fits all solution. This ensures that we can complete our mission of providing you value with a quality product that is sent directly to your door, regardless of your filtration needs.
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Where We Came From
Nearly 70 years of giving back to our communities
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 nearly 1,000 employees from all walks of life. 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.
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100% American Made
Local sourcing, manufacturing, and distribution
From our first air filter produced in 2013, we have proudly built our business in the USA, now manufacturing in Alabama, Florida, Pennsylvania, and Utah. This robust network gives us the unique ability to swiftly fulfill diverse, custom orders to households and businesses across the country.
Product information
Technical Details
Additional Information
ASIN | B00CK03SFC |
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Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #16,532 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #274 in Furnace Filters |
Date First Available | April 27, 2013 |
Warranty & Support
Feedback
Looking for specific info?
Product guides and documents
Compare with similar items
This Item Filterbuy 20x20x4 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.38 x 19.38 x 3.63 Inches) | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $50.24$50.24 | $76.99$76.99 | $70.74$70.74 | -5% $64.49$64.49 List: $67.99 | $38.17$38.17 | $43.66$43.66 |
Delivery | Get it as soon as Tomorrow, Mar 29 | — | Get it as soon as Tomorrow, Mar 29 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tomorrow, Mar 29 | Get it as soon as Tomorrow, Mar 29 |
Customer Ratings | ||||||
Sturdiness | 4.4 | 4.3 | 4.6 | 4.3 | 4.7 | 4.1 |
Easy to install | 4.4 | 4.6 | 5.0 | 4.3 | 4.7 | 4.5 |
Value for money | 3.9 | 4.3 | 5.0 | 3.8 | 4.5 | 4.1 |
Sold By | Filterbuy | Filter Pro | Filterbuy | Amazon.com | Filterbuy | Filterbuy |
compatible devices | Air Conditioner, Furnace, Heat Pump, Air Cleaner | Furnace, Air Conditioner | Air Conditioner, Furnace, Heat Pump, Air Cleaner | Air Conditioner, Furnace | Air Conditioner, Furnace, Heat Pump, Air Cleaner | Air Conditioner, Furnace, Heat Pump, Air Cleaner |
MERV rating | 11 | 11 | 11 | 12 | 11 | 13 |
number of items | 1 | 2 | 1 | 2 | 1 | 1 |
material | Plastic, Aluminum, Polyester | — | Plastic, Aluminum, Polyester | Electrostatically charged filter media | Plastic, Aluminum, Polyester | Plastic, Aluminum, Polyester |
Related Posts
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the value and performance of the air filter. For example, they mention that it works great and is more than adequate to do the job. That said, some complain about the fit. Opinions are mixed on quality.
AI-generated from the text of customer reviews
Customers like the value of the air filter. They mention that it's an excellent value, more affordable as a 2 pack, and reasonable.
"These filters were good quality at a reasonable price. Unfortunately, they were not the correct size...." Read more
"...They also have a MERV rating of 11 which is very good. The price is also must better on Amazon than local stores where I pay almost that much for 1..." Read more
"...Other than that good price and product." Read more
"...Great value." Read more
Customers are satisfied with the performance of the air filter. They mention that it works great, is more than adequate to do the job, and is a great product.
"The furnace filters fit fine and they work well." Read more
"...Ah, relief for my system. Excellent product." Read more
"...Easy to install and does the job." Read more
"...a little smaller than 4 inches, but I believe they are more than adequate to do the job. What I love the most is they're good for 12 months...." Read more
Customers are mixed about the quality of the air filter. Some mention it's a good quality filter with excellent filtration, while others say it'll leave huge gaps and is poorly constructed.
"Filters arrived early and fit perfectly in my furnace. The filtration is great. Price is a little high, but everything is higher priced these days...." Read more
"...Second off... these are very cheaply constructed. Not sturdy and the pleats are not spaced out evenly at all......" Read more
"These filters were good quality at a reasonable price. Unfortunately, they were not the correct size...." Read more
"...when they arrived, one was poorly assembled and had an opening through the filter material near one edge, and the other had its pleats unevenly..." Read more
Customers are dissatisfied with the fit of the air filter. They mention that the sizing was different, the filters were smaller than expected, and about 1/2" short on all dimensions. They also say that the filters fit loosely in the intake framing and did not fit their opening.
"...It turned out that their sizing was different. Mine said 20/20/4" and with them I needed a 20/20/5"...." Read more
"...to the measurements our a/c tech told us, but these filters were slightly too small...." Read more
"Filters arrived early and fit perfectly in my furnace. The filtration is great. Price is a little high, but everything is higher priced these days...." Read more
"An OK filter overall. the dimensions are slightly undersize when fitted inside my filter box." Read more
Reviews with images
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Top reviews
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
First off...never thought Id have to read fine print for ACTUAL filter dimensions. These are about 1/2" short on all dimensions which would allow dirty air to travel around it and get into the evaporator...pretty much useless! Depth isn't as important but length and width are pretty critical
Second off... these are very cheaply constructed. Not sturdy and the pleats are not spaced out evenly at all...
Air will take the path of least resistance which in this case would be around the filter instead of through it. Youve been warned...
Reviewed in the United States on December 30, 2022
First off...never thought Id have to read fine print for ACTUAL filter dimensions. These are about 1/2" short on all dimensions which would allow dirty air to travel around it and get into the evaporator...pretty much useless! Depth isn't as important but length and width are pretty critical
Second off... these are very cheaply constructed. Not sturdy and the pleats are not spaced out evenly at all...
Air will take the path of least resistance which in this case would be around the filter instead of through it. Youve been warned...
Top reviews from other countries
Great transaction