Fits Models:
Holmes Humidifiers: HM-1800, HM-1840, HM-1845, HM-1850, HM-1851, HM-1851U, HM-1855, HM-1865, HM-1865P, HM-1888, HM-1889, HM-1895, HM-1975, HM-2059, HM-2060W, HM-2090, HM-2090ZE, HM-3000, HM-7600, HM-7600-U (HM-3800, HM-3850 - requires 3 wicks), (HM-4000 - requires 2 wicks). (HWF-65, HWF65CS, HWF-65CS, HWF65PDQU, HWF65PDQ-U).

Also Fits:
Bionaire Humidifiers: BCM-1845, BCM-1845C, BCM-1850, BCM-1855. (BWF-65)
GE (General Electric) Humidifiers: 106609, 106663, 106763
Sunbeam Humidifiers: SCM-1866, SCM-1895, SCM-1896 (SWF-65)
White Westinghouse Humidifiers: WWH-650, WWHM-1840, WWHM-1845, WWHM-2090ZE, WWHM-3800

Features:

• Patented Expanded Life reinforced filter for extended life and efficiency.
• Micro-Free antimicrobial treatment helps protect HWF-65 wick filter from the growth and migration of mold, fungus, algae and bacteria.
• Approximate Dimensions: 7 1/2" Dia x 7 3/4" H

Replace every 2 months for optimal performance.