Replacement Air Filter for All Bionaire Console Humidifier Models: C22, C23, W2, W25, W6, W65, W7, W9, W9HW95, W25, W0210, W02105, W0305, W0310, W0340, W3040, WC084. old sku BIO1.
Front side of filter contains white filtration media, while the back side of the filter contains a layer of black carbon media for absorbing odors.
2 Pack - Made by FiltersUSA