12x20x4 Filters

What Our Customers Have to Say

David J. 1 day ago
5
Filters fit are a perfect size and will work well
silvan b. 1 day ago
5
Discount Filters are the best on the market. I've been using them for many years and I don't plan on ditching them any time soon.
Alabama 6 days ago
5
Good product, great price, prompt service
customer 6 days ago
5
We change our filters in the prescribed period and can report that each time the used filter shows that it has collected a great quantity of dust and the like. This change out improves the quality of air in the building.