Humidifier Wick Filter for HWF64 Bionaire Fits Bionaire models BCM1745 and BCM2200. Measures approximately 6 1/2 H x 4 1/2 ID x 6 1/2 OD x 1 Thick. Honeycomb filtration to trap mineral pollutants found in water and help prevent them from entering your For optimum performance replace filter at the beginning of each season or every 2 months depending on