18x20x4 Filters

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What Our Customers Have to Say

ANDREA JULYE 1 day ago

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

Like the HERV rating.

Rudy Casas Limon 1 day ago

I’m happy you all have the products you have

WALTER LINDGREN 2 days ago

Correct size, good design, functional