If someone in your home has asthma or allergies change your filter every
6 Weeks
to ensure indoor air quality is at its best.
18x20x1 AIRx High Flow Air Filter
Made in USA
Compatibility guarantee — Wrong fit or not happy - we'll make it right, up to a whole year
Change every 6 months
Swap on schedule for best performance
Made with pride in Greenwood, Indiana
Your purchase supports American jobs
MERV
Find your ideal filtration level
Compatibility guarantee
Wrong fit or not happy - we'll make it right, up to a whole year
Filter Description
Having trouble with your AC or Furnace shutting down or struggling to keep up with heating or cooling needs? Energy bills costing too much? The New AIRx High Flow filter solves the problem with improved airflow of ordinary pleated filters.
Better airflow means your AC or Furnace doesn't have to work as hard and will heat or cool your home in less time and at a lower energy cost.
With 65% more filter media, High Flow filter greatly improves air flow while reducing potentially harmful pollutants in your air.
Perfect for all HVAC systems, especially older or sensitive systems.
MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, dander, smoke and smog.
Did we mention 65% more pleated media?!
Made with pride in the USA.
Fast Shipping and Free Returns.
Better airflow means your AC or Furnace doesn't have to work as hard and will heat or cool your home in less time and at a lower energy cost.
With 65% more filter media, High Flow filter greatly improves air flow while reducing potentially harmful pollutants in your air.
Perfect for all HVAC systems, especially older or sensitive systems.
MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, dander, smoke and smog.
Did we mention 65% more pleated media?!
Made with pride in the USA.
Fast Shipping and Free Returns.
$28.99
Code DF20 · Save 20%
$28.99 per filter
Code DF20 · Save 20%
SAVE 0%
1-pack
Pack Size
In Stock,
Ships onTuesday, Sep. 29th
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Orders over $70 ship free. $5.99 otherwise.
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Compatibility guarantee
Wrong fit, leak, or just doesn’t work? We’ll send the right one. Free return shipping for all orders.
365-day satisfaction
Not happy? Send it back any time in the first year — we’ll make it right. Yes, even an open pack you’ve been running for months.
No-hassle returns
No restocking fees, no return-merch authorization mazes — just start a return and our helpful Customer Experience team will assist.
Filter Maintenance
Is it time to change your Filter?
Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.
If you have pets change your filter every
2 Months
to avoid shedding and odor buildup.
If you have young children change your filter every
2–3 Months
as having clean air is even more important with children in your home.
Filter Specifications
What does this filter remove?
Nominal Size
18 ×
20 ×
1"
Actual Size
17 ½ ×
19 ½ ×
¾"
Filter Media
Electrostatically charged 100% synthetic gradient media that does not support microbiological growth
Filter Support Grid
30 gauge galvanized expanded metal grid
Frame
Moisture resistant double-wall beverage board
Max Temperature
180F (82C) continuous service, peak 225F (107C)
Max Humidity
Resistant to 100% R.H.
Initial Resistance
0.14" WC
Rated Velocity
295 FPM
Performance Testing
Performance Rating
| MERV | (µm) PSE (%) | 0.3-1.0 | 1.0-3.0 | 3.0-10 | Airflow Rate (CFM) | 369 | 553 | 738 | 922 | 738 * | * Max Rated Airflow |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 11 | 28 | 68 | 86 | Initial Resistance (IWC) | 0.09 | 0.14 | 0.2 | 0.28 | 0.2 * |
| MERV | |
|---|---|
| 11 | |
| (µm) PSE (%) | |
| 0.3-1.0 | 28 |
| 1.0-3.0 | 68 |
| 3.0-10 | 86 |
| Airflow Rate (CFM) | Initial Resistance (IWC) |
| 369 | 0.09 |
| 553 | 0.14 |
| 738 | 0.2 |
| 922 | 0.28 |
| 738 * | 0.2 * | * Max Rated Airflow |
About This Product
Is this the right air filter for you?
Having trouble with your AC or Furnace shutting down or struggling to keep up with heating or cooling needs? Energy bills costing too much? The New AIRx High Flow filter solves the problem with improved airflow of ordinary pleated filters.
Better airflow means your AC or Furnace doesn't have to work as hard and will heat or cool your home in less time and at a lower energy cost.
With 65% more filter media, High Flow filter greatly improves air flow while reducing potentially harmful pollutants in your air.
-
Perfect for all HVAC systems, especially older or sensitive systems.
-
MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, dander, smoke and smog.
-
Did we mention 65% more pleated media?!
-
Made with pride in the USA.
-
Fast Shipping and Free Returns.
Customer Reviews
4.9
14 verified reviews
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