Top 10 Best foam air filter material in 2026

Last Updated - 6/21/2026

🏆Best Choice

ALEGI

ALEGI Aquarium Sponge Filter Pad, Bio Filter Media Foam Sponges, Cut-to-Size Foam for Fish Tank (20"x20"x1" (20PPI))

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Efficient Filtration: The high-density and unique structure of the sponge provide exceptional mechanical filtration. It effectively captures and removes impurities, suspended particles, and waste from the water, maintaining a clear and stable aquatic environment for the well-being of your aquatic organisms.
•Premium Material: Manufactured from high-quality sponge material, this product ensures durability and long-term stability. The sponge is resistant to deformation, decomposition, and dissolution, maintaining its filtration efficiency and longevity.
•Easy Installation: Users can accurately cut it to the desired size and easily place it into the filtration system.
•Reusable: This Sponge is easy to clean and maintain. It can be washed and reused multiple times, allowing you to restore its filtration performance regularly and prolong its lifespan, offering an economical and eco-friendly filtration solution for aquarium enthusiasts.
•Size: 20x20x1 inch, 20PPI

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$8.99

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MADHOLLY

15.7" x 59" Extra Large Cuttable Air Conditioner Filters - Cut to Fit Carbon Pad Air Purifier Filters, Washable Reusable Foam Pad Pre Filter Roll for Air Filters AC Window Unit Charcoal Sheet

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Cut to Fit: We offer you two larger sizes of air conditioner replacement filters, 15.7" x 27.6" and 15.7" x 59". The larger size allows for more cutting and use. You can cut it according to your home needs to fit various air conditioners and purifiers.
•Experience Cleaner Air: Our cut to fit foam pad pre filter efficiently captures large particles such as hair and dust, protecting your filter and prolonging its lifespan. It eliminates impurities like pet hair, lint, smoke, and VOCs, leaving fresh, breathable air behind. This ensures a safer environment for pets, kids, and families.
•Thickness of 5/16 in: Unlike other ultra-thin cut to fit air filters, our window air conditioner filters are 5/16 in thick, which can effectively block large particles and provide a better filtration effect. After use, you can clean it and use it again to extend its service life.
•Compatible Design: Our air conditioner foam filter is suitable for various appliances like air purifiers, Air conditioners, range hood filters, humidifiers, vents, computer mainframe fans, etc. The cuttable design allows it to be compatible with a variety of most electrical appliances.
•Warm Reminder: Since we are vacuum packaging, we recommend that you disassemble the foam pad pre filter and leave it for 2-3 days until it fully rebounds before using it. We recommend replacing the carbon filter every 1 to 2 months for a better purification effect.

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$9.99

$11.99

-17%

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Classicfoam

Classicfoam Air Filter Foam Sheet Material - 12"x18"x5/8" - 60 PPI for Motorcycles, Dirt Bikes, Classic Cars, ATV, UTV, SXS, Small Engines

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•UNIVERSAL FOAM: Our DIY air filter foam is perfect for motorcycles, dirt bikes, offroad vehicles, classic cars, and more. The classic black color maintains an OEM look.
•EXTRA LARGE: 12"x18"x5/8" - The largest air filter sheet on the market.
•HIGH PERFORMANCE: Our 60 PPI foam offers excellent air flow, while ensuring proper engine protection.
•ENGINEERED TO LAST: Our unique foam composition withstands common motorsport fluids, such as gas, oil, and fumes.
•ATTENTION: Oiling your filter before use is required to ensure proper filtration! We reccommend any quality foam filter oil, such as UNI, Lucas, Maxima, PJ1, Belray, etc.

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$17.96

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4into1

Uni Filter - BF-1 BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Hi-Flow Green Filter Foam Sheet
•12 Inches x 16 Inches x 5/8 Inch
•Unlimited Potential for Use in Custom Applications
•Fit type: Vehicle Specific

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$19.52

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DUCTAIL

DUCTAIL 2 Pack 17211-899-000 Air Filter, Compatible with Honda Generator EB3000 EB3500 EB3500X EB5000X EB6500 EB6500X GP6500 EM3000 EM3500S EM5000 EM5000X EM5000SX 17211899000 Foam Air Filter Parts

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•17211-899-000 Air Filter: compatible with Honda generator EB3000 EB3500 EB3500X EB3800X EB5000 EB5000X EB6500 EB6500X GP6500 EM3000 EM3500S EM4000 EM5000 EM5000S EM5000X EM5000SX EM6000 EM6500SX powermate generac generator air filter parts.
•Compatible with: Honda portable generators air filter GX240 K1 R1 R2 RT1 RT2 U1, GX270 R RT RT2 U UT, GX340 K1 R1 R2 RT1 RT2 U1, GX390 K1 R1 R2 RT1 RT2 U1 UH1 UT1 UT2, generac engine air cleaner.
•Air filter replace for: Honda generac generator 17211-899-000 17211899000 17211 899 000 EW171 EW140 EW170 EW171K1 air filter parts.
•Compatible with: Stens 102-689 coleman powermate 5000 Oregon 30-963 Rotary 12801 RS7000E GP7500E GP7500E GP8000E 420cc engine generac generator foam air filter parts.
•What You Get: 2 Pack 17211-899-000 Air Filter + 2 Pack fuel filte. Filter Size: Length 6-1/2" Width 4-1/2"Height 1-3/8".

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$9.99

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Batator

Foam Air Filter Material Sheet for Uni Filter-BF-1 BF1-14" X 17" X 5/8", 65-PPI Bulk Fine Filter Foam Sheet, Reusable Air Filter for Most Motorcycle ATV Scooters, Dirt Bike,UTV-Green

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Premium Filter Material : Crafted with high-quality 65-PPI green fine air filter foam sheet, this Filter air filter material delivers superior filtration efficiency, effectively capturing particle and debris to safeguard your engine and ensure peak performance.
•High Flow Performance : Air filter foam designed to allow for high air flow through the filter media, this air filter foam sheet helps to enhance engine breathing, resulting in improved power output and overall engine performance for your vehicle or equipment.
•Can cut and Adaptable : With its 14" X 17" sheet size and 5/8" thickness, this air filter foam sheet can be easily cut and shaped to fit a wide range of custom air filter applications, Can be use for range hood filters, vent filter, quads, lawn mower engine filters, brush cutters, blowers filters, chainsaws, generators etc.
•Fit for Various Vehicles：This washable foam air filter is designed to fit a wide range of vehicles, including pre filter for motorcycles, ATVs, scooters, and dirt bikes, withstands common motorsport fluids, such as gas, oil, and fumes, nsuring your motorbike breathes easy
•Durable Construction : The thick and robust 65-PPI foam material ensures long-lasting durability, resisting deformation and wear under demanding operating conditions, making it an ideal choice for both everyday use and high-performance applications.

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$17.95

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Magluv

Foam Air Filter Material Replacement for Uni Filter ATV Air Filters- BF-1 BF1 14" X 17" X 5/8" 65-PPI Green Fine Foam Sheet, Air Filter Pads for Motorcycle ATV Scooters Dirt Bike

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【High-Flow Green Filter Foam Sheet】: This 65-PPI Green foam air filter material (Part Number: BF-1) is designed for optimal air flow and excellent filtration. It’s an essential upgrade for any air filter system
•【Efficient Filtration】: Constructed with high-quality foam materia, for uni filter foam features a fine density of 65 PPI. It offers superior filtration efficiency, capturing small particles, keeping all dirt and dust out
•【Cut at Will】: This air filter foam sheet is perfect for cutting and fitting to your stock air filter housing, replace old paper filter elements with new serviceable foam
•【 Fit for Various Vehicles】：This washable foam air filter is designed to fit a wide range of vehicles, including pre filter for motorcycles, ATVs, scooters, and dirt bikes, withstands common motorsport fluids, such as gas, oil, and fumes, nsuring your motorbike breathes easy
•【More Applications】：Measuring 14 in x 17 in x 5/8 in. Can be cut to size for range hood filters, vent filter, quads, lawn mower engine filters, brush cutters, blowers filters, chainsaws, generators etc. Tailor this foam air filter to your exact needs

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$17.95

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Ripeng

Ripeng 4 Pcs 12"x18"x5/8" Air Filter Foam Sheet Material 60 PPI for Motorcycles, Dirt Bikes, Classic Cars, ATV, UTV, SXS, Small Engines

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Efficient Air Purification Solution: upgrade your air filtration with our set of 4 foam air filter panels, designed to enhance engine performance while being easy on the wallet; The generous 12"x18"x5/8" size allows for extended use, ensuring consistent and efficient air purification for motorcycles, dirt bikes, and classic cars
•Durable Foam Composition: crafted from a unique foam material, these filters endure exposure to oil and exhaust, common in racing environments; This durability extends the life of your filters, providing you with a reliable solution that withstands the demands of high performance engines
•Universal Fit for Versatile Use: our foam air filter is a universal fit for a wide range of vehicles, including motorcycles, off road bikes, and classic cars; Its classic black appearance seamlessly complements original vehicle designs, making it a practical choice for both aesthetics and performance
•High Performance Filtration: enjoy optimal engine protection with our 60 PPI foam, which strikes the ideal balance between exceptional air flow and effective filtration; This high performance feature ensures your engine breathes clean air, contributing to better fuel efficiency and engine longevity
•Easy Pre Oiling Requirement: before use, apply oil to the filters to maximize their filtration capability, ensuring cleaner air intake; This simple step enhances the product's effectiveness, offering you an economical and environmentally conscious option for superior air purification and engine maintenance

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$19.99

$32.99

-39%

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Duck

Duck Replacement Air Conditioner Foam Filter, 24-inch by 15-inch by 1/4-inch,...

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Only contains 1 filter, cut to size

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$9.99

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PATIKIL

PATIKIL 120mm Filter Foam Sponges, 10 Pack Sponge Sheet Replacement Media Pad for Computer, Ventilator, Fan, Black

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Specification: Color: Black; Material: Sponge; Overall Size: 120mm x 120mm x 3mm / 4.72inch x 4.72inch x 0.12inch(L*W*H); Package Content: 10 pcs Filter Foam Sponges
•Advantage: These sponges help isolate particles and debris, extend the life of the fan, and provide efficient air flow to reduce clogging. Regular cleaning allows it to be used again and again.
•Instruction: These filter pads are easy to use and can be cut to size according to different needs. If the filter pad is dirty, it can be reused for a long time after cleaning.
•Application: Filter Foam Sponges usually can be used for the protection of heat dissipation, exhaust and vents of air conditioners, motors, exhaust fans, radiators, fans, generators, computers, etc.
•Notice: Please check the size of your fan before purchasing. Use the scissors carefully to avoid hurting your fingers.

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$13.29

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