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Actual Size: 16.38x21.38x2"
3 month filters
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Made in the USA
Ships in 24 hours
Available In MERV Rating: 8, 13, 11
Made in the USA
Ships in 24 hours
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 MERV 8 |  MERV 11 |  MERV 13 | |
|---|---|---|---|
| Best for | Standard Residential/Commercial Healthy Families | Superior Residential/Commercial Allergy Sufferers | Optimal Residential/Commercial Hospital Grade |
| Comparable ratings | MPR 600 & FPR 5 | MPR 1000-1200 & FPR 7 | MPR 1500 - 1900 & FPR 10 |
| Filtration | Captures 90% of Airborne Particles | Captures 95% of Airborne Particles | Captures 98% of Airborne Particles |
| Dust, lint & debris | |||
| Mold, pollen | |||
| Dander, dust mites | |||
| Smoke & Smog | |||
| Bacteria | |||
| Odor, vocs |
Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.
Change your filter every
6 weeks
to ensure indoor air quality is at its best.
Change your filter every
2 months
to avoid shedding and odor buildup.
Change your filter every
2-3 months
as having clean air is even more important with children in your home.
Change your filter every
6 weeks
to ensure indoor air quality is at its best.
Change your filter every
2 months
to avoid shedding and odor buildup.
Change your filter every
2-3 months
as having clean air is even more important with children in your home.
After helping countless homeowners improve their indoor air, we know how much of a difference the right filter can make. Especially true for hard to find sizes like the air conditioner filter 16.38x21.38x2.
In this guide, we'll share what we've learned from our testing so you can choose the best 16.38x21.38x2 air filter for your home.
16.38x21.38x2 is a non-standard filter size. Filterbuy custom filters ensure proper airflow and filtration.
Filterbuy filters reduce dust and allergy triggers.
Helps your HVAC last longer.
Prevents system strain and higher energy bills.
Replace every 60–90 days for best results.
Filterbuy 16.38x21.38x2 pleated air filters strike the best balance for most households. They capture the small particles without restricting airflow. This makes them best for homes with pets and allergy sufferers.
Unlike standard filters, our USA made 16.38x21.38x2 air filters for allergies are designed for a snug fit. This prevents unfiltered air from bypassing the filter. If you’re looking for cleaner air, better HVAC efficiency and fewer filter changes, our top rated MERV 8, MERV 11 and MERV 13 options have proven to deliver lasting value across different home environments.
Filterbuy offers many air filters of various sizes. We offer filters from 1 to 5 inches, and even non-standard filter sizes like 16.38x21.38x2 allergen air filters. There are numerous sizes to choose from!
Here are the benefits:
The right size for rare filters - Goodbye to searching in stores, and hello to the right fit for unique HVAC sizes. It’s a quick, yet precise way to upgrade your filter
Fit for your needs - Custom filters not only fit exactly for your system, but also to your own personal needs.
Longer lifespan - They last longer than your regular filters. Because they’re tailored to your needs and made with the best quality materials.
Increased energy efficiency - You spend less with these custom-made filters. They’re perfect in the long run.
More comfort - With its high quality creation and snug fit in your HVAC, comfort and also good health are guaranteed.
Here’s what data and experience tell us about the importance of using the right air filter, especially in uncommon sizes like air filter 16.38x21.38x2:
1. Air Bypass
Unfiltered air, along with dust, allergens and other pollutants simply flows around the filter and enters the HVAC and your home.
U.S. Department of Energy and the U.S. Environmental Protection Agency states that when a filter doesn't fit snugly in the filter slot, it leaves gaps around the edges.
Sources: Department of Energy, EPA
2. MERV 13 filters trap particles as small as 0.3 microns.
These include allergens, smoke and viruses.
ASHRAE recommends MERV 13 for improved indoor air quality.
Source: ASHRAE – Filtration & Disinfection
3. Better air filters lower your risk of airborne illness.
We’ve seen fewer allergy and asthma flare-ups after upgrades.
The CDC links effective filtration to reduced virus exposure.
Source: CDC – Ventilation & Respiratory Viruses
Ready to improve your air quality? Follow these simple steps:
1. Confirm Your Filter Size. Make sure it’s 16.38x21.38x2.
2. Pick the Right MERV Rating
Choose MERV 8 when dust is your primary concern.
Choose MERV 11 when you’re sensitive to pollen and dander.
Choose MERV 13 when smog, smoke and bacteria are top concerns.
3. Order a Precision Fit. Choose Filterbuy’s USA-made 16.38x21.38x2 filters for a snug fit and better results.
4. Replace on Time. Change filters every 60 to 90 days.
5. Get Help if You Need It. Contact Filterbuy team for personal recommendations.
Free, Super Fast Shipping — Sometimes next-day.
Buy packs, get up to 70% off each filter.
These filters actually last for 90 days — way longer than cheap fiberglass versions.
Made right here in the USA with super high quality materials.
Auto Delivery option —save another 5% and you'll never forget to replace your filters again.
Super Easy, Super Affordable.
This filter size is designed for specific HVAC units that require precise dimensions. It helps trap dust, allergens, pet dander and airborne particles to improve indoor air quality and protect your HVAC unit.
Replacement is recommended every 90 days. If you have pets, allergies or smoke indoors, consider changing it every 60 days for optimal air quality and performance.
MERV 8–11: Good for basic filtration and homes without allergies.
MERV 13: Ideal for high filtration needs—like allergies, urban areas, or respiratory concerns.
You can order this size directly from Filterbuy. We offer custom-cut, USA-made filters for a snug fit and reliable performance. Generic store filters may not provide the same precision or quality.
A proper fit ensures all air passes through the filter, not around it. An incorrect size can lead to bypass airflow, poor filtration, reduced HVAC efficiency and increased energy bills.
Choose the correct size
Turn off the power supply
Remove the old air filter
Dispose the old product
Insert the best 16.38x21.38x2 air filter
Replace the cover
Buy in bulk
Yes. But local stock can be limited. Filterbuy.com lets you skip the trip and get fresh filters delivered fast.
Filterbuy.com is your most reliable source. They specialize in a wide variety of air filter sizes, including 16.38x21.38x2 filter, and offer direct shipping.
