Honeywell Hrf-C1 Air Filter, 9-7/8 In H, 4-1/2 In W
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Honeywell HEPAClean 4.9 in. H X 1.6 in. W Rectangular Air Purifier Filter
Honeywell HEPAClean 4.9 in. H X 1.6 in. W Rectangular Air Purifier Filter. For optimal performance, replace filter every 6 months. Tower air purifiers require 2 filters.