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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.
Superior filtration efficiency - aerostar filters are made with electrostatically charged synthetic material that draws and captures allergens including lint, pet dander, pollen, dust mites, mold spores, and dust. Improve indoor air quality - protect your family and loved ones with clean indoor air quality at home.

Ideal for residential and commercial use. Synthetic media provides significantly higher particulate efficiency than standard cotton media. Traps 90% of airborne particles: say goodbye to dust, lint, debris, pollen, and pet dander.

Exclusive filtrate brand 3 in 1 technology from 3M traps unwanted air particles, while letting cleaner air flow through.
Filtrate 300 mpr micro particle Performance Rating equates to MERV 5. Packaging and filter media may vary for MPR 300 Outperforms fiberglass, washable and non electrostatic 3 month pleated 1 inches air filters for your furnace, air conditioner, or HVAC system. Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores.

Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". 20x25x4 merv 13 pleated air filter for ac hvac or furnace pack of 4 filters.
Suitable for residential and business or commercial use Industrial grade. Also captures bacteria, mold spores and smoke.

Long-lasting: designed to last up to 3 months. 20x25x1 merv 8 pleated air filter for ac hvac or furnace pack of 4 filters.

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.


20x25x4 merv 11 pleated air filter for ac hvac or furnace pack of 4 Filters. Synthetic media provides significantly higher particulate efficiency than standard cotton media.

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.
A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. Outperforms fiberglass, air conditioner, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, or HVAC system.1000 and 1200 mpr also available in 4”, 4” slim fit and 5” air filters. Material: Synthetic.

Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1in.
2 testing for 03 to 1 micron particles from the air passing through the filter, which relates to HVAC industry standard efficiency testing. Home air filters for your furnace, air conditioner or HVAC system. Sign-up for a filter change reminder program that works for you! Slim fit and 5 in. Filters, and at least every 12 months for 4 in.
Top 10 20x25x4 Furnace Filter – Furnace Filters
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1. Aerostar
#ad
Aerostar Clean House 20x25x4 MERV 8 Pleated Air Filter, Actual Size: 19 1/2"x24 1/2"x3 3/4", 6-Pack, Made in the USA
#adAerostar #ad - 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. 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.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.
More information #ad
High performing - 100% synthetic electrostatic media for high efficiency with low air flow resistance. 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. Superior filtration efficiency - aerostar filters are made with electrostatically charged synthetic material that draws and captures allergens including lint, pet dander, pollen, dust mites, mold spores, and dust. Improve indoor air quality - protect your family and loved ones with clean indoor air quality at home.
Brand | Aerostar #ad |
Manufacturer | Filtration Group (Environmental Air) #ad |
Weight | 11.02 Pounds |
Part Number | 20x25x4 MERV 8 |
Model | 20x25x4 MERV 8 |
More information #ad
2. FilterBuy
#ad
Actual size 19 3/8" x 24 3/8" x 3 5/8", Pack of 2 Filters, 20x25x4 – Silver, FilterBuy 20x25x4 MERV 8 Pleated AC Furnace Air Filter
#adFilterBuy #ad - High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Say hello to better indoor air quality!20x25x4 merv 8 pleated air filter for ac hvac or furnace Pack of 2 Filters.Ideal for residential and commercial use. Synthetic media provides significantly higher particulate efficiency than standard cotton media. Traps 90% of airborne particles: say goodbye to dust, lint, debris, pollen, and pet dander.
More information #ad
Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Check your size. Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". Long-lasting: designed to last up to 3 months. Afb silver merv 8, comparable with mPR 300 / 600 clean living and dust & pollen.Brand | FilterBuy #ad |
Manufacturer | FilterBuy #ad |
Part Number | AFB20x25x4M8pk2 |
Model | AFB20x25x4M8pk2 |
More information #ad
3. Filtrete
#ad
Filtrete 20x25x1, Clean Living Basic Dust, 6-Pack, AC Furnace Air Filter, MPR 300
#adFiltrete #ad - For optimum performance, change your home air filter every 90 days or sooner. 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.Exclusive filtrate brand 3 in 1 technology from 3M traps unwanted air particles, while letting cleaner air flow through.
More information #ad
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. For residential use only. Filtrate 300 mpr micro particle Performance Rating equates to MERV 5. Packaging and filter media may vary for MPR 300 Outperforms fiberglass, washable and non electrostatic 3 month pleated 1 inches air filters for your furnace, air conditioner, or HVAC system. Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores.
Brand | Filtrete #ad |
Manufacturer | Filtrete #ad |
Height | 19.69 Inches |
Length | 24.69 Inches |
Weight | 1 Pounds |
Width | 0.81 Inches |
Part Number | MPR 300 |
Model | BD03-6PK-1E |
Warranty | Limited Warranty |
More information #ad
4. FilterBuy
#ad
Pack of 4 Filters, FilterBuy 20x25x4 MERV 13 Pleated AC Furnace Air Filter, Actual size 19 3/8" x 24 3/8" x 3 5/8", 20x25x4 – Platinum
#adFilterBuy #ad - Long-lasting: designed to last up to 3 months. Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Check your size. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F.Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". 20x25x4 merv 13 pleated air filter for ac hvac or furnace pack of 4 filters.
More information #ad
Synthetic media provides significantly higher particulate efficiency than standard cotton media. Afb platinum merv 13, comparable with mpr 1500 to 1900 Ultimate Allergen Defense or Allergen Elite FPR 10 Hospital grade merv 13 synthetic media: attracts and captures airborne particles or allergens less than one micron in size such as pollen, fine dust, viruses carrying particles, pet dander. Suitable for residential and business or commercial use Industrial grade. Also captures bacteria, mold spores and smoke.
Brand | FilterBuy #ad |
Manufacturer | FilterBuy #ad |
Part Number | AFB20x25x4M13pk4 |
Model | AFB20x25x4M13pk4 |
More information #ad
5. FilterBuy
#ad
FilterBuy AFB Silver 20x25x1 MERV 8 Pleated HVAC AC Furnace Air Filter, 4-Pack
#adFilterBuy #ad - Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Ideal for residential and commercial use. Say hello to better indoor air quality! Synthetic media provides significantly higher particulate efficiency than standard cotton media.Long-lasting: designed to last up to 3 months. 20x25x1 merv 8 pleated air filter for ac hvac or furnace pack of 4 filters.
More information #ad
Afb silver merv 8, comparable with mPR 300 / 600 clean living and dust & pollen. Traps 90% of airborne particles: say goodbye to dust, lint, pollen, debris, and pet dander. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F.Brand | FilterBuy #ad |
Manufacturer | FilterBuy #ad |
Height | 3.2 Inches |
Length | 24.8 Inches |
Weight | 2.4 Pounds |
Width | 19.4 Inches |
Part Number | AFB20x25x1M8pk4 |
Model | AFB20x25x1M8pk4 |
More information #ad
6. FilterBuy
#ad
20x25x4 – Silver, Actual size 19 3/8" x 24 3/8" x 3 5/8", Pack of 6 Filters, FilterBuy 20x25x4 MERV 8 Pleated AC Furnace Air Filter
#adFilterBuy #ad - Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". 20x25x4 merv 8 pleated air filter for ac hvac or furnace Pack of 6 Filters. Long-lasting: designed to last up to 3 months.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.
More information #ad
Traps 90% of airborne particles: say goodbye to dust, debris, lint, pollen, and pet dander. Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Afb silver merv 8, comparable with mPR 300 / 600 clean living and dust & pollen. Check your size. Ideal for residential and commercial use. Say hello to better indoor air quality! .Brand | FilterBuy #ad |
Manufacturer | FilterBuy #ad |
Part Number | AFB20x25x4M8pk6 |
Model | AFB20x25x4M8pk6 |
More information #ad
7. Nordic Pure
#ad
Box of 2, Nordic Pure 20x25x4 3-5/8 Actual Depth MERV 12 Pleated AC Furnace Air Filters
#adNordic Pure #ad - Lead/handling Time - 5. Attracts indoor allergens, dust, pollen and other airborne contaminants. Actual size: 19 1/2 x 24 1/2 x 3 5/8 19.More information #ad
Proudly made in the USA. 5 x 24. Nordic pure recommends changing 4" air filters every 3-6 months. Hypoallergenic and pleated electrostatic filter material. 5 x 3. 63.Brand | Nordic Pure #ad |
Manufacturer | Nordic Pure #ad |
Height | 19.5 Inches |
Length | 24.5 Inches |
Width | 3.63 Inches |
Part Number | 20x25x4M12-2 |
Model | 20x25x4 (3 5/8) |
Warranty | Not Applicable |
More information #ad
8. FilterBuy
#ad
FilterBuy 20x25x4 MERV 11 Pleated AC Furnace Air Filter, 20x25x4 – Gold, Actual size 19 3/8" x 24 3/8" x 3 5/8", Pack of 4 Filters
#adFilterBuy #ad - High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Merv 11 synthetic media designed for allergen protection: Attracts and captures pet dander, pollen, dust, lint, dust mite debris, mold spores, smoke, and smog.20x25x4 merv 11 pleated air filter for ac hvac or furnace pack of 4 Filters. Synthetic media provides significantly higher particulate efficiency than standard cotton media.
More information #ad
Check your size. Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". Suitable for residential and business or commercial use Industrial grade. Long-lasting: designed to last up to 3 months. Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Afb gold merv 11, comparable with mpr 1200 Allergen or Micro Particle MPR800 .Brand | FilterBuy #ad |
Manufacturer | FilterBuy #ad |
Part Number | AFB20x25x4M11pk4 |
Model | AFB20x25x4M11pk4 |
More information #ad
9. Filtrete
#ad
2-Pack, Filtrete 20x25x4, AC Furnace Air Filter, Micro Allergen Defense Deep Pleat, MPR 1000 DP
#adFiltrete #ad - For optimal performance, change your home air filter at least every 90 days for 1” filters, and at least every 12 months for 4” and 5” filters. Sign-up for a filter change reminder program that works for you! Filtrete 1000 mpr microparticle Performance Rating equates to MERV 11.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.
More information #ad
For residential use only. Exclusive filtrete brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. Outperforms fiberglass, air conditioner, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, or HVAC system.1000 and 1200 mpr also available in 4”, 4” slim fit and 5” air filters. Material: Synthetic.
Brand | Filtrete #ad |
Manufacturer | Filtrete #ad |
Height | 25 Inches |
Length | 4 Inches |
Width | 20 Inches |
Part Number | NADP03-2PK-2 |
Model | NADP03-2PK-2 |
More information #ad
10. Filtrete
#ad
Healthy Living Ultrafine Particle Reduction, 2-Pack, MPR 2800, Filtrete 20x25x1, AC Furnace Air Filter
#adFiltrete #ad - Thick air filters. 2800 mpr has a rating of MERV 14. And 5 in. Attracts and captures microscopic particles such as smoke, bacteria and viruses--and large particles, cough and sneeze debris, including lint, household dust and pollen.Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1in.
More information #ad
Filters. Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. Find your size: 2800 mpr available in 4 in. 4 in. 81% 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. Home air filters for your furnace, air conditioner or HVAC system. Sign-up for a filter change reminder program that works for you! Slim fit and 5 in. Filters, and at least every 12 months for 4 in.
Brand | Filtrete #ad |
Manufacturer | 3M CHIMD #ad |
Height | 25 Inches |
Length | 16 Inches |
Weight | 2.2 Pounds |
Width | 1 Inches |
Part Number | UF03-2PK-6E |
Model | UF03-2PK-6E |
More information #ad