20 X 20 X 4" Standard Filters

NOTE: Please compare the actual size of your current filter with the actual sizes listed on our site. A nominal 20" x 20" x 4" filter can be different actual sizes depending on the brand of your air cleaner.
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What Our Customers Have to Say

Betty B. 1 day ago
5
I always reorder this product. Works well in my home.
EAE S. 1 day ago
5
Probably ordered the wrong thickness. Too thick to fit into my housing's guides. All the 5" thick filters are 4.XXX" thickness. These are a little more 4.XXX" than I need.
Ed T. 1 day ago
5
Good price for the product
AvidReader 1 day ago
5
As expected! Same quality for half the price of hardware store!