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

Hans Peter Schwendeler 1 day ago
5
Professional attitude, staff is very helpful.
Henry C. Fields 1 day ago
5
Very good
Garry W 1 day ago
5
Good service, good products, been using DiscountFilters for years.
Garry W 1 day ago
5
Good service, good products, been using DiscountFilters for years.