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🚚 Free Shipping | Top-Tier HVAC Filters | 5⭐ Trusted!
🚚 Free Shipping | Top-Tier HVAC Filters | 5⭐ Trusted!
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High-Performance HVAC Bag Filters

Ensure optimal air filtration for your HVAC system with our selection of high-performance bag filters. Designed for commercial, industrial, and residential applications, these filters provide superior airflow and particulate capture. Our collection features trusted brands like AAF Flanders and KOCH Filter, offering reliable filtration solutions in a wide range of sizes and MERV ratings.

Whether you need filters for general HVAC use, clean air environments, or specialized industrial settings, our bag filters deliver long-lasting performance. Available in MERV 15, MERV 14, MERV 13, and other ratings, these filters effectively trap fine particulates, ensuring cleaner air and improved system efficiency.

Bag filters are ideal for high-dust environments, offering extended service life with durable construction and low resistance for energy efficiency. With options to fit a variety of system configurations, our filters provide the perfect balance of performance, durability, and value.

Upgrade your air filtration system today with our selection of HVAC bag filters, engineered to deliver the clean air your space needs. If you don’t see what you’re looking for, let us know—it’s likely not listed on the website.

Filters

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$ 334.56 - $ 334.56
$ 334.56
$ 334.56 - $ 334.56
$ 334.56

12x24x18 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-103-218 (6 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 334.56 - $ 334.56
$ 334.56
$ 334.56 - $ 334.56
$ 334.56
$ 297.52 - $ 297.52
$ 297.52
$ 297.52 - $ 297.52
$ 297.52

12x24x22 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-104-222 (4 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 297.52 - $ 297.52
$ 297.52
$ 297.52 - $ 297.52
$ 297.52
$ 401.92 - $ 401.92
$ 401.92
$ 401.92 - $ 401.92
$ 401.92

24x24x22 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-106-122 (4 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 401.92 - $ 401.92
$ 401.92
$ 401.92 - $ 401.92
$ 401.92
$ 519.20 - $ 519.20
$ 519.20
$ 519.20 - $ 519.20
$ 519.20

24x24x22 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-108-122 (4 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 519.20 - $ 519.20
$ 519.20
$ 519.20 - $ 519.20
$ 519.20
$ 302.84 - $ 302.84
$ 302.84
$ 302.84 - $ 302.84
$ 302.84

24x24x30 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-108-130 (2 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 302.84 - $ 302.84
$ 302.84
$ 302.84 - $ 302.84
$ 302.84
$ 393.08 - $ 393.08
$ 393.08
$ 393.08 - $ 393.08
$ 393.08

24x24x33 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-110-133 (2 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 393.08 - $ 393.08
$ 393.08
$ 393.08 - $ 393.08
$ 393.08
$ 418.66 - $ 418.66
$ 418.66
$ 418.66 - $ 418.66
$ 418.66

24x24x36 Multi-Sak Oil Mist Extended Surface Bag Air Filters MERV 15 239-110-136 (2 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 418.66 - $ 418.66
$ 418.66
$ 418.66 - $ 418.66
$ 418.66
$ 342.96 - $ 342.96
$ 342.96
$ 342.96 - $ 342.96
$ 342.96

12x24x15 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-103-215 (6 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 342.96 - $ 342.96
$ 342.96
$ 342.96 - $ 342.96
$ 342.96
$ 354.84 - $ 354.84
$ 354.84
$ 354.84 - $ 354.84
$ 354.84

12x24x36 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-103-236 (6 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 354.84 - $ 354.84
$ 354.84
$ 354.84 - $ 354.84
$ 354.84
$ 330.66 - $ 330.66
$ 330.66
$ 330.66 - $ 330.66
$ 330.66

12x24x15 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-104-215 (6 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 330.66 - $ 330.66
$ 330.66
$ 330.66 - $ 330.66
$ 330.66
$ 409.05 - $ 409.05
$ 409.05
$ 409.05 - $ 409.05
$ 409.05

20x20x22 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-105-422 (5 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 409.05 - $ 409.05
$ 409.05
$ 409.05 - $ 409.05
$ 409.05
$ 201.68 - $ 201.68
$ 201.68
$ 201.68 - $ 201.68
$ 201.68

12x24x12 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-105-212 (4 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 201.68 - $ 201.68
$ 201.68
$ 201.68 - $ 201.68
$ 201.68
$ 225.24 - $ 225.24
$ 225.24
$ 225.24 - $ 225.24
$ 225.24

12x24x15 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-105-215 (4 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 225.24 - $ 225.24
$ 225.24
$ 225.24 - $ 225.24
$ 225.24
$ 410.04 - $ 410.04
$ 410.04
$ 410.04 - $ 410.04
$ 410.04

12x24x22 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-105-222 (6 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 410.04 - $ 410.04
$ 410.04
$ 410.04 - $ 410.04
$ 410.04
$ 481.40 - $ 481.40
$ 481.40
$ 481.40 - $ 481.40
$ 481.40

20x24x30 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-330 (5 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

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$ 481.40 - $ 481.40
$ 481.40
$ 481.40 - $ 481.40
$ 481.40
$ 326.45 - $ 326.45
$ 326.45
$ 326.45 - $ 326.45
$ 326.45

12x24x15 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-215 (5 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 326.45 - $ 326.45
$ 326.45
$ 326.45 - $ 326.45
$ 326.45
$ 371.05 - $ 371.05
$ 371.05
$ 371.05 - $ 371.05
$ 371.05

12x24x22 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-222 (5 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 371.05 - $ 371.05
$ 371.05
$ 371.05 - $ 371.05
$ 371.05
$ 318.15 - $ 318.15
$ 318.15
$ 318.15 - $ 318.15
$ 318.15

24x24x12 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-112 (5 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 318.15 - $ 318.15
$ 318.15
$ 318.15 - $ 318.15
$ 318.15
$ 369.32 - $ 369.32
$ 369.32
$ 369.32 - $ 369.32
$ 369.32

24x24x30 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-130 (4 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 369.32 - $ 369.32
$ 369.32
$ 369.32 - $ 369.32
$ 369.32
$ 306.81 - $ 306.81
$ 306.81
$ 306.81 - $ 306.81
$ 306.81

24x24x36 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-136 (3 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 306.81 - $ 306.81
$ 306.81
$ 306.81 - $ 306.81
$ 306.81
$ 303.69 - $ 303.69
$ 303.69
$ 303.69 - $ 303.69
$ 303.69

24x24x12 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-110-112 (3 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 303.69 - $ 303.69
$ 303.69
$ 303.69 - $ 303.69
$ 303.69
$ 368.70 - $ 368.70
$ 368.70
$ 368.70 - $ 368.70
$ 368.70

24x24x22 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-110-122 (3 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 368.70 - $ 368.70
$ 368.70
$ 368.70 - $ 368.70
$ 368.70
$ 372.45 - $ 372.45
$ 372.45
$ 372.45 - $ 372.45
$ 372.45

24x24x15 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-112-115 (3 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 372.45 - $ 372.45
$ 372.45
$ 372.45 - $ 372.45
$ 372.45
$ 336.75 - $ 336.75
$ 336.75
$ 336.75 - $ 336.75
$ 336.75

24x24x15 Multi-Sak Microfiberglass Extended Surface Bag Air Filters MERV 11 216-106-115 (5 Filters)

Multi-Sak The Koch Multi-Sak is an extended surface air filter, designed for most medium and high efficiency air filtration ...

View full details
$ 336.75 - $ 336.75
$ 336.75
$ 336.75 - $ 336.75
$ 336.75

Your Trusted Source For Bag Filters

We offer a complete selection of high-performance Bag 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 Bag 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 Bag filters online? Your purchase is backed by our Filter Fit Guarantee™.

Free Delivery

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

Highly Rated Bag Filters

High-Performance HVAC Bag Filters from leading manufactuerers.

Have questions about Bag Filters?

What are Bag filters designed for?

Bag 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 Bag are right for my system?

The best way to determine if Bag 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 Bag filters used in residential or commercial systems?

Bag 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 Bag filters be replaced or maintained?

Replacement schedules for Bag 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 Bag?

Bag 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 Bag filters made in the USA?

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

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

With nearly 20 years online and over 50 years of HVAC experience, we offer only high-quality Bag 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.

Why Trust RememberTheFilter.com?

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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