Replacement humidifier wick filter.

Fits Models
Holmes Humidifiers: HM-850, HM-3400, HM-3500, HM-3501, HM-3600, HM-3607, HM-3640, HM-3641, HM-3650, HM-3655, HM-3656 (HWF-75).
Bionaire Humidifiers: W-12, W-12-UC, W-14, W-15 (BWF-1500).
White Westinghouse Humidifiers: WWHM-3300, WWHM-3600.

Replace every 2 months for optimal performance.

Features:

• Patented Expanded Life reinforced filter for extended life and efficiency.
• Micro-Free antimicrobial treatment helps protect HWF-75 wick filter from the growth and migration of mold, fungus, algae and bacteria.
• Approximate Dimensions: 10" x 7-3/4"