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Open-Box: Aprilaire 1210 Whole House Air Cleaner
Open-Box: Aprilaire 1210 Whole House Air Cleaner Original price was: $85.84.Current price is: $37.42.

Open-Box: Dri-Eaz HEPA 500 Optional Activated Carbon Filter – 4 PACK (F397)

Original price was: $223.00.Current price is: $94.50.

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Estimated delivery dates: Jul 14, 2026 - Jul 15, 2026
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Description

This Activated Carbon Filter (F397) is designed for use in the Dri-Eaz DefendAir HEPA 500 Air Scrubber. Installing this filter equips the HEPA 500 to capture a wide variety of volatile organic compounds (VOCs), including soot and smoke, food odors, fumes from paint and paint thinners, sewer odors, and many other compounds. Available in a pack of 4. 

Product Features

  • Eliminates VOCs – Captures a wide variety of volatile organic compounds (VOCs)
  • Utilizes Extruded Activated Carbon – Uses 2.2 pounds of carbon pellets manufactured to uniform size to help ensure maximum airflow and maximum contact  
  • Uses Adsorption Method – Works by adsorption, carbon filtration’s natural ability to attract and hold gas and liquid molecules on its surface.
  • Large Filtration Capacity – One pound of carbon has 534,438 square yards of available surface – equivalent to the area covered by more than 100 football fields.

Installing the Carbon Filter

No modification of your DefendAir unit is required when installing this filter. You’ll simply place the new carbon filter inside the cabinet in front of HEPA filter and then re-secure the cover. The capacity of the carbon filter will vary widely depending on conditions, but it should be replaced when a decline of effectiveness is noted.

Dri-Eaz DefendAir HEPA 500 Filter Configurations

Your Filtration Needs 1st Stage Filtration (Pre-Filter position) 2nd Stage Filtration (Pre-Filter position) Final Stage Filtration (Primary HEPA Filter)
Clean Water Loss Air Scrubbing 1st stage pre-filter not necessary Install  2nd stage pre-filter (F271) Install HEPA 500 filter cartridge (F321)
Standard Air Scrubbing Install 1st stage pre-filter (F270) Install  2nd stage pre-filter (F271) Install HEPA 500 filter cartridge (F321)
“First Pass” Efficiency Air Scrubbing Install  2nd stage pre-filter (F271) Install  DOP 2nd stage pre-filter (F415) Install HEPA 500 filter cartridge (F321)
Air Scrubbing and Odor Control Install  activated carbon filter (F397) Install  2nd stage pre-filter (F271) Install HEPA 500 filter cartridge (F321)
Additional information
Weight N/A
Condition

Very Good

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Like New

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Acceptable

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Good

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