Top 10 20x20x4 Air Filter – Furnace Filters

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1. Nordic Pure

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Nordic Pure 20x20x4 MERV 12 Pleated AC Furnace Air Filters 2 Pack

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Nordic Pure #ad - 5 x 3. Actual size: 19 1/2 x 19 1/2 x 3 5/8 19. Made in the U. S. A. Hypoallergenic and pleated electrostatic filter material. 63. Attracts indoor allergens, dust, pollen and other airborne contaminants. 5 x 19. Nordic pure recommends changing 4" air filters every 3-6 months.
BrandNordic Pure #ad
ManufacturerNordic Pure #ad
Height20 Inches
Length20 Inches
Width4 Inches
Part Number20x20x4M12-2
Model20x20x4M12-2

2. FilterBuy

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Pack of 2 Filters, 20x20x4 – Platinum, FilterBuy 20x20x4 MERV 13 Pleated AC Furnace Air Filter

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FilterBuy #ad - Also captures bacteria, mold spores and smoke. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Long-lasting: designed to last up to 3 months.

Afb platinum merv 13, comparable with mpr 1500 to 1900 Ultimate Allergen Defense or Allergen Elite FPR 10 Suitable for residential and business or commercial use Industrial grade. Synthetic media provides significantly higher particulate efficiency than standard cotton media. Hospital grade merv 13 synthetic media: attracts and captures airborne particles or allergens less than one micron in size such as pollen, viruses carrying particles, fine dust, pet dander.20x20x4 merv 13 pleated air filter for ac hvac or furnace pack of 2 filters. Made in the usa: manufactured by FilterBuy in the USA using 100% American made components.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x20x4M13pk2
ModelAFB20x20x4M13pk2

3. FilterBuy

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FilterBuy 20x20x4 MERV 8 Pleated AC Furnace Air Filter, 20x20x4 – Silver, Pack of 2 Filters

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FilterBuy #ad - Ideal for residential and commercial use. Long-lasting: designed to last up to 3 months. 20x20x4 merv 8 pleated air filter for ac hvac or furnace pack of 2 filters.

Synthetic media provides significantly higher particulate efficiency than standard cotton media. Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Say hello to better indoor air quality! High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Traps 90% of airborne particles: say goodbye to dust, pollen, lint, debris, and pet dander. Afb silver merv 8, comparable with mPR 300 / 600 clean living and dust & pollen.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x20x4M8pk2
ModelAFB20x20x4M8pk2

4. Honeywell Home

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MERV 11, Honeywell FC100A1011 20 x 20 x 4 inch replacement media air furnace filter

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Honeywell Home #ad - The package weight of the product is 1. 3999353637 pounds. The package width of the product is 19. 9999999796 inches. The package length of the product is 19. 9999999796 inches. The package height of the product is 4. 599999995308 inches.
BrandHoneywell Home #ad
ManufacturerHoneywell Home #ad
Height26 Inches
Length17 Inches
Weight1 Pounds
Width28 Inches
Part NumberFC100A1011
ModelFC100A1011

5. Aerostar

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Actual Size: 19 1/2"x24 1/2"x3 3/4", Aerostar Clean House 20x25x4 MERV 8 Pleated Air Filter, Made in the USA, 6-Pack

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Aerostar #ad - Aerostar filters are a simple to install and cost-effective step towards a healthier home environment, free of airborne allergens and particles that can trigger various allergy and asthma symptoms. Improve indoor air quality - protect your family and loved ones with clean indoor air quality at home.

High performing - 100% synthetic electrostatic media for high efficiency with low air flow resistance. Made in the usa - aerostar filters are manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions for residential, commercial and industrial applications. Superior filtration efficiency - aerostar filters are made with electrostatically charged synthetic material that draws and captures allergens including lint, mold spores, dust mites, pollen, pet dander, and dust.

Check your fit - nominal size: 20x25x4; actual size: 19 1/2"x24 1/2"x3 3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5. For best results, change your filters every 60 to 90 days during normal times of year but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest.
BrandAerostar #ad
ManufacturerFiltration Group (Environmental Air) #ad
Weight11.02 Pounds
Part Number20x25x4 MERV 8
Model20x25x4 MERV 8

6. Filtrete

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Filtrete 20x25x4SlimFit, Healthy Living Ultra Allergen Deep Pleat, MPR 1550 DP, AC Furnace Air Filter, 2-Pack exact dimensions 19.88 x 24.63 x 4.2

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Filtrete #ad - 54% small particle capture, like bacteria and particles that carry viruses % captured is based on ASHRAE 52. 2 testing for 03 to 1 micron particles from the air passing through the filter, which relates to HVAC industry standard efficiency testing.

Filters, and at least every 12 months for 4in. Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. The higher the mpr, smoke, pet dander, the more microparticles - such as pollen, bacteria and viruses - your filter will capture from the air passing through it. And 5in. Home air filters for your furnace, air conditioner or HVAC system.

Find your size: 1550 mpr available in 4 in. 4 in. Certified as asthma & allergy friendly As outlined in report ASCR: 1246-01. Filters. Slim fit and 5 in. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. 1550 mpr has a rating of MERV 12. Sign-up for a filter change reminder program that works for you!
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.88 Inches
Length24.63 Inches
Weight2.38 Pounds
Width4.31 Inches
Part NumberNDP03-4S-2P-2
ModelMPR 1550 DP
WarrantyLimited Warranty

7. Filtrete

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MPR 300, Filtrete BD03-6PK-1E 20x25x1, 6-Pack, Clean Living Basic Dust, AC Furnace Air Filter

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Filtrete #ad - For residential use only. Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores. For optimum performance, change your home air filter every 90 days or sooner.

Filtrate 300 mpr micro particle Performance Rating equates to MERV 5. Packaging and filter media may vary for MPR 300 A dirty filter will slow down air flow and make the system work harder to keep you warm or cool wasting energy; Sign up for a filter change reminder program that works for you. The higher the mpr, pet dander, smoke, the more micro particles such as pollen, bacteria and viruses your filter will capture from the air passing through it.

Exclusive filtrate brand 3 in 1 technology from 3M traps unwanted air particles, while letting cleaner air flow through. Outperforms fiberglass, air conditioner, washable and non electrostatic 3 month pleated 1 inches air filters for your furnace, or HVAC system.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.69 Inches
Length24.69 Inches
Weight1 Pounds
Width0.81 Inches
Part NumberMPR 300
ModelBD03-6PK-1E
WarrantyLimited Warranty

8. Aerostar

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Made in the USA, Aerostar Allergen & Pet Dander 20x25x4 MERV 11 Pleated Air Filter, 6-Pack, Actual Size: 19 1/2"x24 1/2"x3 3/4"

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Aerostar #ad - Superior filtration efficiency - aerostar filters are made with electrostatically charged synthetic material that draws and captures allergens including lint, pollen, pet dander, dust mites, mold spores, and dust. Made in the usa - aerostar filters are manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions for residential, commercial and industrial applications.

High performing - 100% synthetic electrostatic media for high efficiency with low air flow resistance. Improve indoor air quality - protect your family and loved ones with clean indoor air quality at home. Check your fit - nominal size: 20x25x4; actual size: 19 1/2"x24 1/2"x3 3/4"; this MERV 11 filter is comparable with MPR 1000-1200 & FPR 7.

For best results, change your filters every 60 to 90 days during normal times of year but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest. Aerostar filters are a simple to install and cost-effective step towards a healthier home environment, free of airborne allergens and particles that can trigger various allergy and asthma symptoms.
BrandAerostar #ad
ManufacturerFiltration Group (Environmental Air) #ad
Weight13.76 Pounds
Part Number20x25x4 MERV 11
Model20x25x4 MERV 11

9. Filtrete

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AC Furnace Air Filter, 2-Pack exact dimensions 19.88 x 19.88 x 4.2, Micro Allergen Defense Deep Pleat, Filtrete 20x20x4, MPR 1000 DP

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Filtrete #ad - Find your size: 1000 mpr available in 4in. 4in. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Sign-up for a filter change reminder program that works for you!1000 mpr has a rating of MERV 11.

When the lifespan is up, then choose 30, you’ll get a notification to change your filter. Create a change countdown in the filtrete smart app. Thick air filters. Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. Filters. Slim fit and 5in. Home air filters for your furnace, air conditioner or HVAC system. For residential use only. And 5 in. Attracts and captures particles such as lint, pollen, pet dander, dust, smoke and smog.

Simply use the app to scan the barcode on your filter’s packaging, 60 or 90 days for your replacement countdown. The higher the mpr, the more microparticles--such as pollen, smoke, pet dander, bacteria and viruses--your filter will capture from the air passing through it. Filters, and at least every 12 months for 4 in. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.88 Inches
Length19.88 Inches
Width4.31 Inches
Part NumberADP02-2PK-2
ModelADP02-2PK-2
WarrantyAs Labelled

10. FilterBuy

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FilterBuy 20x20x4 MERV 11 Pleated AC Furnace Air Filter, 20x20x4 – Gold, Pack of 2 Filters

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FilterBuy #ad - Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Long-lasting: designed to last up to 3 months. 20x20x4 merv 11 pleated air filter for ac hvac or furnace pack of 2 filters.

Merv 11 synthetic media designed for allergen protection: Attracts and captures pet dander, pollen, dust, lint, dust mite debris, mold spores, smoke, and smog. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Synthetic media provides significantly higher particulate efficiency than standard cotton media. Afb gold merv 11, comparable with mpr 1200 Allergen or Micro Particle MPR800 Suitable for residential and business or commercial use Industrial grade.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x20x4M11pk2
ModelAFB20x20x4M11pk2