For a more economical alternative for this Holmes HAPF600 HEPA Filter for Harmony Series try the Holmes HAPF600.
The Holmes HAPF600 HEPA Filter fits new Harmony Series Modular Air Purifiers to help remove up to 99.7% of particles as small as 0.3 Microns from the air. The HAPF-600 captures many common allergens including smoke, dust, pollen, pet dander, mold spores, and dust mite debris while also reducing unwanted smells and odor. This filter is also enhanced with Arm & Hammer baking soda to help reduce common household odors. Filter size is 10" x 6 1/2" x 2". The HAPF600 should be replaced at least once per year for optimum performance. Also known as part numbers HAPF-600cs, HAPF600D, HAPF-600D.
Please see below for filter requirements:
Requires 1 filter: Holmes HAP615, HAP715
Requires 2 filters: Holmes HAP625, HAP725, HAP726, HAP1625, HAP1725
Requires 3 filters: Holmes HAP650, HAP750, HAP1650, HAP1750
Requires 4 filters: Holmes HAP675RC
**Please note the extra filters required for the Air Purifier Models listed may be Pre-filters. Please consult your instruction manual for details.