17x20x4 Pleated Air Filters
Actual Size of Air Filter: 16 1/2 x 19 1/2 x 3 5/8
Nordic Pure is now offering this custom size filter as a standard size, therefore we will accept returns. Please measure the actual air filter for your AC unit. The size printed on your air filter may NOT be the Actual Size.
- Nordic Pure Four Inch Air Filters are actually 3 5/8" thick.
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- Free Shipping in the contiguous United States – Directly to your door.
- LOW manufacturer-direct prices.
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EXACT MEASUREMENT: Furnace and Air Conditioner Filters may have an actual size that is a fraction of an inch smaller in length and width than the nominal size listed on the air filter. For example, a "10x10x4" air filter is actually 9 1/2; x 9 1/2; x 3 5/8; but the "10 x 10 x 4 Exact" is 10 x 10 x 3 5/8 in size, therefore making the nominal and actual size exactly the same. Please use the actual size of your current air filter when ordering. Use a tape measure or yardstick if necessary to measure the outer dimensions for your air filter order. The actual width and length of the air filter should be within 1/8 of an inch.
CONSTRUCTION: Custom air filters are made by cutting down or combining 1, 2, or 3 A/C air filter frames. Depending on the size we may use any combination of glue, staples and tape to make your size air filters. So, they may not be pretty but they WILL be strong enough to handle your HVAC system. Therefore, they usually cost less than our competitors, especially with the Free Shipping!
Nordic Pure, manufacturer direct since 1960. We manufacture MERVs 7, 8, 9, 10, 11, 12, 13, and 14 high efficiency pleated air conditioner and furnace filters. They capture microscopic airborne dust, pollen, allergens, mold spores, pet dander, bacteria and particulates carrying bacteria, and viruses in the air. Maximize the filtration by choosing a higher MERV rated air filter. Our MERVs 12, 13, 14, and 15 air filters, which capture up to 98.9% + of air born particles, are best for people suffering with allergies and other breathing issues. We can make most odd-sized MERVs 7, 8, 10, 11, 12, 13, and 14 CUSTOM HVAC air filters in 1”, 2”, or 4” and MERV 15 in 4" for low cost and fast Free Home Delivery. Visit our Brand Name menu to locate the genuine Nordic Pure® brand replacement for your OEM air filters. Our non-woven synthetic air filter media will not support the growth of mold or bacteria, keeping your home healthier. As we say in the industry, "You have to move the air to clean the air". Our hypoallergenic and antimicrobial air filters use permanently electrostatically charged material that acts like a magnet to help dust cling to the air filter. This helps protect your unit, home, and family.
CLICK HERE for What is MERV information.