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

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!
Suzanne G. 1 day ago
5
Quality filters and good service.
MikeandRita W. 1 day ago
5
I have been using these filters for several years now and have always been very pleased with their quality and reliability,