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.
Showing 1 -  7 of 7 Products
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What Our Customers Have to Say

ANDREA JULYE 1 day ago
5
Efficient air filter; a little pricey, but great bang for the price as it does a great filtering job.
Kim L. Vanover 1 day ago
5
Like the HERV rating.
Rudy Casas Limon 1 day ago
5
I’m happy you all have the products you have
WALTER LINDGREN 2 days ago
5
Correct size, good design, functional