AAF Flanders 4-Pack 20" x 20" x 1" Nested Fiberglass MERV 1 Air Filter
AAF Flanders 4-Pack 20" x 20" x 1" Nested Fiberglass MERV 1 Air Filter
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AAF Flanders 4-Pack 20" x 20" x 1" Nested Fiberglass MERV 1 Air Filter

AAF Flanders 4-Pack 20" x 20" x 1" Nested Fiberglass MERV 1 Air FilterAAF AAF Flanders Nested FiberGlass MERV 1 Air Filter size 20 x 20 x 1 4 FiltersFlanders 4 Filters 14 X 24 X 1 Precisionaire Nested Glass Air Filter2 pack AAF Flanders 4 Filters 16 x 20 x 1 Nested Glass MERV 1 Air Filter2 pack AAF Flanders 20 x 25 x 1 Nested Glass MERV 1 Air Filter 4 Pack2 pack AAF Flanders 4 Filters 20 x 30 x 1 Nested Glass MERV 1 Air FilterAAF Flanders 4 Filters 20 x 30 x 1 Nested Glass MERV 1 Air Filter2 pack AAF Flanders 4 Filters 16 x 25 x 1 Nested Glass MERV 1 Air FilterAAF Flanders 4 Filters 14 x 20 x 1 Nested Glass MERV 1 Air FilterAAF Flanders 4 Pack 12 x 12 x 1 Nested Glass MERV 1 Air FilterAAF Flanders 4 Filters 16 x 20 x 1 Nested Glass MERV 1 Air Filter2 pack Flanders 4 Filters 14 X 24 X 1 Precisionaire Nested Glass Air FilterAAF Flanders 20 x 25 x 1 Nested Glass MERV 1 Air Filter 4 PackAAF Flanders 4 Filters 16 x 25 x 1 Nested Glass MERV 1 Air Filter2 pack AAF Flanders 4 Filters 14 x 20 x 1 Nested Glass MERV 1 Air Filter2 pack AAF Flanders 4 Pack 12 x 12 x 1 Nested Glass MERV 1 Air Filter2 pack AAF AAF Flanders Nested FiberGlass MERV 1 Air Filter size 20 x 20 x 1 4 FiltersAAF Flanders 4 Filters 12 x 24 x 1 Nested Glass MERV 1 Air Filter
Air Filter Size:20 x 20 x 1
Pack Size:Single

Key item features

  • Equipment Protection: Safeguards heating and air conditioning systems without imposing additional strain.
  • Efficient Storage: Features a nested construction for convenient and space-saving storage.
  • Filter Longevity: Each individual filter provides effective performance for up to 30 days.
  • Safety Standard: Certified as a UL Class 2 product, meeting established safety requirements.
  • Durable Construction: Utilizes self-retaining spun glass media adhering directly to a heavy one-piece chipboard frame, preventing corner separation.
  • Energy Efficiency: Designed with a low initial pressure drop to promote energy-efficient operation.
  • Trusted Heritage: A fiberglass panel filter with over 50 years of proven reliability for furnaces and air conditioners.
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Current price is $7.48$1.87/ea
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Customer ratings & reviews

4.5 out of 5 stars
stars15K ratings3,970 reviews
How item rating is calculated
  1. 5 stars79% (11.9K)
  2. 4 stars9% (1,377)
  3. 3 stars4% (621)
  4. 2 stars2% (239)
  5. 1 star6% (946)

Reviews summary

Pros

  • : Offers great value at a low cost.
  • : Filter fits securely into the desired location.
  • : Allows good airflow without restriction for efficient performance.
  • : Made of durable material that performs as expected.
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Showing 1-3 of 3,970 reviews

May 22, 2019
Joseph
Item details
Air filter size: 20 x 25 x 1
Multipack quantity: 1
5 out of 5 stars review

finally a ac filter that "won me over"

well let's say ....I have used all filters from A to Z.....well this one ...not only did my ac air increase....but my electric bill decreased due to a filter that actually let's the system breath and overall run less and more efficient....this is my ac filter for life...ty Walmart !!

Helpful?1BNR83MZWQ3B16225740
Feb 27, 2026
Fredaj
Top Reviewer
Item details
Air filter size: 20 x 25 x 1
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Just as good as Name Brands

These are just as good as the more expensive and name-brand brands. I have been purchasing these for YEARS. I had to buy a different brand a couple of times due to these not being in stock in the size we needed and I felt they didn't hold up as well.

Helpful?1BNR83MZWQ3B16225740
Jan 21, 2026
Chelle
Top Reviewer
Item details
Air filter size: 14 x 20 x 1
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Excellent value and recommended by my HVAC tech

These were recommended by my HVAC technician. He said people often use the thicker ones, which can be detrimental to the AC system in your home. I've used these for years. They collect dust, are easy to use, provide good air flow, and are a great value.

Helpful?1BNR83MZWQ3B16225740