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🚚 Free Shipping | Top-Brands HVAC Filters | 5⭐ Trusted!
🚚 Free Shipping | Top-Brands HVAC Filters | 5⭐ Trusted!
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Rigid HVAC Filters

Enhance your HVAC system’s performance with our premium selection of rigid filters, designed to meet the highest standards of air filtration across various applications.

Our Rigid HVAC Filter Collection Includes:

• Multi-Cell Filters: High-efficiency, extended surface filters ideal for variable air volume (VAV) systems, available in multiple efficiencies and configurations.

• DuraMAX Series: Rigid, extended surface minipleat filters offering low pressure drop and prolonged service life, suitable for demanding environments.

• MicroMAX Filters: Compact, extended surface minipleat filters providing high efficiency and low pressure drop, perfect for standard HVAC systems.

• Multi-Flo Series: Rigid, extended surface filters engineered for medium to high efficiency air filtration with durable construction, suitable for VAV applications. 

Our rigid filters are constructed with robust materials to withstand variable air volumes and high velocities, ensuring consistent performance and durability. They are available in various sizes and efficiency ratings to accommodate your specific HVAC requirements.

Invest in our rigid HVAC filters to maintain optimal indoor air quality, protect your HVAC equipment, and enhance overall system efficiency.

For detailed specifications and to select the appropriate filter for your needs, please refer to the individual product pages.

Filters

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$ 238.38 - $ 238.38
$ 238.38
$ 238.38 - $ 238.38
$ 238.38

20x16x12 Koch Multi-Cell Galvanized MERV 14 Single Header 110-730-004

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

View full details
$ 238.38 - $ 238.38
$ 238.38
$ 238.38 - $ 238.38
$ 238.38
$ 343.54 - $ 343.54
$ 343.54
$ 343.54 - $ 343.54
$ 343.54

24x12x12 Koch Multi-Cell Galvanized MERV 14 Single Header 110-730-002 (2 Filters)

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

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$ 343.54 - $ 343.54
$ 343.54
$ 343.54 - $ 343.54
$ 343.54
$ 260.37 - $ 260.37
$ 260.37
$ 260.37 - $ 260.37
$ 260.37

24x24x12 Koch Multi-Cell Galvanized MERV 14 Single Header 110-730-001

Multi-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...

View full details
$ 260.37 - $ 260.37
$ 260.37
$ 260.37 - $ 260.37
$ 260.37

Your Trusted Source For Rigid Filters

We offer a complete selection of high-performance Rigid HVAC filters. Whether you're replacing filters in your home, office, or commercial HVAC system, you'll find trusted options in MERV 1–13, including pleated, fiberglass, washable, and specialty filters.

All Rigid filters are made in the USA and sourced from leading manufacturers like AAF Flanders and Koch Filter. Choose from standard and custom sizes to ensure a proper fit for your system—and enjoy clean air backed by over 50 years of HVAC experience.

Filter Fit Guarantee™

Have concerns about ordering Rigid filters online? Your purchase is backed by our Filter Fit Guarantee™.

Free Delivery

We will ship your Rigid filters direct to your door, for free! All orders in the domestic U.S over $50.

Highly Rated Rigid Filters

Rigid HVAC Filters from leading manufactuerers.

Have questions about Rigid Filters?

What are Rigid filters designed for?

Rigid are designed to capture airborne particles and improve system performance in a wide range of HVAC and air filtration applications.

How do I know if Rigid are right for my system?

The best way to determine if Rigid are right for your system is to check your current filter specs, system requirements, or reach out to our team—we’re happy to help you choose the correct option.

Are Rigid filters used in residential or commercial systems?

Rigid can be used in a variety of applications depending on system compatibility. Some are ideal for homes, while others are built for commercial, industrial, or specialized environments.

How often should Rigid filters be replaced or maintained?

Replacement schedules for Rigid filters vary based on environment, usage, and filter type. Always follow manufacturer guidelines or consult your facility manager or HVAC technician for best results.

What efficiency levels are available in Rigid?

Rigid filters are available in a range of filtration levels—from basic to high-efficiency—based on your air quality goals and system requirements.

Are your Rigid filters made in the USA?

Most of our Rigid replacements are proudly made in the USA by trusted manufacturers known for quality and performance.

What makes RememberTheFilter.com a trusted source for Rigid filters?

With nearly 20 years online and over 50 years of HVAC experience, we offer only high-quality Rigid replacement filter from leading brands—backed by real expertise and personalized support.

What MERV Rating Is Right for You?

MERV (Minimum Efficiency Reporting Value) measures how well an air filter captures particles. A higher number means better filtration—but it must still be compatible with your HVAC system. Here's a breakdown to help you choose the right filter for your home or business.

MERV 1–4

Basic protection. Captures larger particles like dust, lint, and pollen. Minimal airflow resistance. Best for older systems or basic residential use.

✔ Highest airflow
✘ Does not trap fine particles

MERV 8

Great balance of airflow and filtration. Captures mold spores, dust mites, pet dander, and pollen. Most common choice for residential HVAC systems.

✔ Good airflow
✔ Effective for everyday air quality needs

MERV 10

Enhanced dust-holding capacity and improved particle removal compared to MERV 8. Traps finer particles like mold spores, hair spray, and fabric fibers.

✔ More efficient than MERV 8
✔ Still maintains strong airflow

MERV 11

Captures smaller particles like auto emissions, smoke, and some airborne bacteria. Ideal for homes with pets or allergy concerns. Moderate impact on airflow.

✔ Great for allergies
✘ May reduce airflow in older systems

MERV 13

Highest residential-grade filtration. Captures airborne bacteria, tobacco smoke, and fine particles. Recommended for asthma, smoke exposure, or medical-grade needs.

✔ Best indoor air quality
✘ Not suitable for all systems without airflow evaluation

How to Measure HVAC Filters

To find the correct replacement, measure the length, width, and depth of your existing filter. Most filters are labeled with a nominal size (like 16x24x1), which is a rounded number—actual measurements are often slightly smaller. Accurate sizing ensures a proper fit and helps maintain airflow efficiency.

How to Measure HVAC Filter

Step 1: Remove Old Filter

Turn off your system and remove the existing filter. Look for printed dimensions on the frame—this is usually the nominal size.

Step 2: Measure Actual Size

Use a tape measure to get exact dimensions (length × width × depth). Round down to the nearest 1/8" if needed—example: 15-5/8" × 23-5/8" × 3/4".

Step 3: Match or Order Custom

If your measurements don’t match a standard size, we offer custom filters made to your exact dimensions.

Trust RememberTheFilter.com for Premium HVAC Filters & Expert Service

With nearly 20 years online and over 50 years of combined HVAC filter experience, we’re more than just a retailer—we’re filtration experts. As a proud member of the National Air Filtration Association (NAFA), we serve residential, commercial, and government customers across the U.S. Our filters are made in America and sourced from leading manufacturers like AAF Flanders, Koch Filter, and more.

We believe in clean air, fair prices, and helping people—not algorithms.

  • ✅ Nearly 20 years online helping homeowners and businesses nationwide
  • ✅ 50+ years of combined HVAC filtration experience
  • ✅ Member of NAFA – National Air Filtration Association
  • ✅ Made in the USA – filters from AAF Flanders, Koch, and more
  • ✅ Exact Filters® – custom built to your specs, down to 1/8"
  • ✅ Trusted by schools, clinics, and commercial buildings across the U.S.

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