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Actual Size: 23.38x23.38x0.75"
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Factory-Direct Low Prices, Made in the USA
Hassle-Free Returns & Free Exchanges
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 23.38x23.38x0.75"
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 23.38x23.38x0.75"
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
At Filterbuy, we don't cut corners—we craft high-quality air filters right here in the USA and ship them to your doorstep for free. No delays, no gimmicks—just clean air, made easy. With thousands of five-star reviews and filters built for real life & every HVAC system, it's no wonder why over 4 million families trust Filterbuy.
Proudly Made In The USA
Fast, Free Shipping on Every Order
Premium Materials That Go The Distance
85,000+ 5-Star Reviews From Happy Customers
Save Up to 70% Per Filter with Packs
Measure length × width × depth with a tape measure to find the actual size.
Round up each dimension to the nearest whole number to get the nominal size. Example: 23.38x23.38x0.75" in → 24x24x1 nominal.
Search by nominal size on our site for the best fit.
If the filter you buy doesn't fit, we'll send you a better size.
MERV stands for Minimum Efficiency Reporting Value—but don't let the technical name fool you. It's just a way to rate how well an air filter traps stuff like dust, pollen, pet dander, and smoke. The higher the MERV number, the more particles it catches—and the cleaner your air will be.
Comparable to:FPR: 4-7
MPR: 600-1000
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Comparable to:FPR: 6-9
MPR: 1200-1550
Dust & DebrisDust Mites & ParticlesPollenMoldLintDander
Smoke & Smog
Comparable to:FPR: 10
MPR: 1900-2800
Dust & DebrisDust Mites & ParticlesPollenMoldLintDanderSmoke & Smog
Bacteria
Comparable to:FPR: 10
MPR: 1900-2800
Dust & DebrisDust Mites & ParticlesPollenMoldLintDanderSmoke & Smog
Odors
We build every Filterbuy filter to deliver reliable 90-day performance—thanks to smart design and premium materials that do the heavy lifting. Here's what makes the difference:
More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.
Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.
Engineered to resist warping in extreme temperatures and high humidity.
A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.
Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.
Turn Off Your HVAC SystemSafety first.
Remove The Old FilterLook for the airflow arrow and make note of the direction.
Slide In Your New FilterArrow should point toward the system (same direction as before).
Turn Your System Back OnAnd enjoy the fresh, clean air.
Not all air filters are created equal. Pleated filters don't just last longer—they actually clean your air better. Here's how they stack up:
Efficiency:
High (MERV 8–13) – Traps more particles
Lifespan:
90 days – Long-lasting performance
Air Quality:
Excellent – Cleaner, healthier air
Materials:
Recyclable and durable
Efficiency:
Low (MERV 4 or less) – Misses small stuff
Lifespan:
30 days or less – Replace often
Air Quality:
Minimal – Basic protection only
Materials:
Thin, flimsy, and not recyclable
Pleated filters are a no-brainer—more protection, less hassle, and better air for your home.
Changing your filter on time keeps your HVAC system running efficiently—and helps protect your lungs from dust, allergens, and airborne irritants. Here's how often to swap it out based on your needs:
For most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.
Shedding fur, dander, and allergy triggers can build up fast. Changing your filter every two months helps keep the air fresher and symptoms at bay.
For households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.
| Nominal Size | 24 x 24 x 1 inches |
| Actual Size | 23.38 x 23.38 x 0.75" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13, Carbon |
| Lifespan | Up to 90 Days |
| Origin | Made in USA |
At Filterbuy.com, we know from experience that not all air filters are created equal—and that the right filter can make a noticeable difference in your home's air quality and HVAC performance. That’s why our 24x24x1 MERV 11 filters are engineered to go beyond basic dust trapping. Designed and manufactured in the USA, they capture finer particles like pet dander and smoke while maintaining optimal airflow—something we've refined through years of working directly with homeowners and HVAC professionals. When you choose Filterbuy, you're not just buying a filter—you’re investing in cleaner air backed by real-world performance and reliable, fast delivery.
Captures 85% of dust, pollen, mold, and pet dander—ideal for allergy-prone homes.
Maintains strong airflow while improving air quality.
Made in the USA with durable, electrostatic filter media.
Backed by real-world results from homeowners and HVAC professionals.
Easy to order, quick to install, with free shipping and auto-delivery options.
Our MERV 11 241 241 1 were constructed to meet high indoor air quality and protection of the system. These filters are perfect as they allow more than 85 percent of air particles (including pollen, dust mites, mold spores, and smoke) to be trapped and do not hazard the normal circulation of air. Each filter is designed as strong frames made of the high-quality electrostatically-charged natural media. Each filter is handcrafted with pride in the USA. Whether you need to replace or re-supply filters to get you through the season, at Filterbuy.com shipping is always fast and free and auto-delivery takes the guesswork out of remembering to change.
"After years of helping homeowners improve their indoor air quality, we've seen firsthand how a well-made MERV 11 filter can drastically reduce allergens and extend HVAC lifespan. Our 24x24x1 filters are engineered based on real customer feedback and field-tested insights to deliver cleaner air without compromising system efficiency."
Here’s why 24x24x1 MERV 11 filters are a smart choice—supported by research and real Filterbuy customer experience:
Captures allergens such as pollen, animal dander and mold spores.
According to the EPA, 85 percent of the particles of 1.0-3.0 micron are filtered out using MERV 11 filters.
Assists households that are prone to allergies in breathing.
🔗 EPA.gov – What MERV Rating Means
Users report less dust and better air within days of use.
EPA supports higher filtration as key to reducing indoor pollutants. 🔗 EPA – Filtration & Air Cleaning
Designed to balance particle capture and airflow.
No system strain—just clean, efficient performance.
Matches ASHRAE’s recommended specs for residential use. 🔗 ASHRAE – Filtration & Disinfection
Working with both homeowners and HVAC professionals, over the years, we have seen the tangible, practical outcomes of the MERV 11 filters and have been able to tell that it does not compromise performance.
Here’s why our team—and our customers—stand by the 24x24x1 MERV 11 filter:
Reliable Air Protection: Captures over 85% of airborne particles like pollen, dust, and pet dander.
Efficient Performance: Maintains strong airflow to protect HVAC systems.
Proven in Real Homes: Based on years of feedback from homeowners and HVAC professionals.
We've seen that MERV 11 hits the “sweet spot”—offering excellent filtration without system strain.
Ideal for:
Homes with pets
Allergy-sensitive occupants
Those wanting better air quality without costly upgrades
MERV 11 offers practical, everyday protection you can feel.
Backed by science—and real customer results.
If you care about clean air and efficient systems, this filter is your go-to choice.
💡 At Filterbuy, we don’t just sell filters—we stand behind the performance we’ve seen in thousands of homes across the country.
Follow these quick steps to upgrade your home's air quality:
Select Your Quantity
Choose how many 24x24x1 MERV 11 filters you need.
Buy more to save and stay prepared.
Add Auto-Delivery (Optional)
Set a delivery schedule so you never run out.
Place Your Order
Get fast, free shipping from our U.S. facility.
Install Your Filter
Swap it in—clean air begins instantly.
Breathe Better
Enjoy fewer allergens, less dust, and smoother HVAC performance.
MERV 11 refers to the Minimum Efficiency Reporting Value, which measures how well a filter captures airborne particles. A MERV 11 filter traps up to 85% of particles 1.0–3.0 microns in size, including pollen, dust, mold spores, and pet dander—making it ideal for homes that need enhanced indoor air quality.
Yes. MERV 11 filters are designed to provide strong filtration while maintaining proper airflow, which is safe for most residential HVAC and furnace systems. They strike a balance between high particle capture and system efficiency.
It’s recommended to replace MERV 11 filters every 60 to 90 days. However, if you have pets, allergies, or live in a dusty area, changing the filter every 30 to 60 days may offer better performance.
Absolutely. MERV 11 filters are effective at capturing common allergens like pet dander, dust mites, and pollen. Many allergy-prone households notice a significant improvement in air quality after upgrading to MERV 11.
MERV 11 filters trap smaller and more airborne particles than MERV 8. While MERV 8 handles basic filtration (like dust and lint), MERV 11 adds protection against finer particles such as smoke, mold spores, and allergens—making it a better choice for cleaner, healthier air.
