Fits Holmes humidifiers requiring HWF75PDQ-U filter, models HWF75CS, HWF75, HF222, HM3500, HM3600, HM3650, HM3640, HM3641, HM3655, Bionaire BCM3656-UM, W12, W14, W15, Sunbeam SCM3501, SCM3502, SCM3657, White Westinghouse WWHM3300, WWHM3600
Actual size is 10 in. L x 7.75 in. W x 1 in. D
Reduces pollutants from the water treated to inhibit the growth of mold, bacteria, algae, and fungus
Optimum performance, replace every 2-months
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