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Feature

A pack of 4 premium carbon pre filter absorbs and eliminates any household unfavorable odor
For use with Holmes air purifier models: HAP2400, HAP242, HAP9240, HAP9242, HAP412, HAP9412 and HAP9414 requires 1 filter.
HAP422, HAP424, HAP9422 and HAP9424 requires 2 filters
Also works on Bionaire purifier models BAP260, BAP815, BAP825, BAP1412, BAP1502, BAP1525, BAP1700 and BAP8500
9.5" (L) x 4" (W). Cannot be used independent of the main purifier filter. A pack of 4 pre filters included. Directly apply to the Aer1 filter

Description

Premium Carbon Filter absorbs and eliminates odors that come from pets, nurseries, kitchen, garbage, or litter boxes. For use with Holmes air purifier models: HAP2400, HAP242, HAP9240, HAP9242, HAP412, HAP9412 and HAP9414 requires 1 filter. HAP422, HAP424, HAP9422 and HAP9424 requires 2 filters. Also works on Bionaire purifier models BAP260, BAP815, BAP825, BAP1412, BAP1502, BAP1525, BAP1700 and BAP8500. A pack of 4 pre filters included