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AC FURNACE AIR FILTERS MADE IN THE USA

QUICK REORDER

Nominal Size: 20x25x4

Actual sizes we carry are listed below.
Always measure your current filter's actual size to ensure proper fit!

19 1/2 x 24 1/2 x 3 5/8 (19.5 x 24.5 x 3.63)

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19 7/8 x 24 7/8 x 4 3/8 (19.88 x 24.88 x 4.38)

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19 3/4 x 24 3/4 x 4 3/8 (19.75 x 24.75 x 4.38)

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Nominal vs. Actual Size – What You Need to Know

Air filters have a nominal size (e.g., 20 x 25 x 4), which is a rounded number for reference, and an actual size, which is slightly smaller and represents the filter’s true dimensions.

Nordic Pure will be closed on Labor Day.
Need help? Call or email our support team:
1-800-590-0339
[email protected]
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