911D Bionaire Air Purifier Filters

Air cleaner filter for all Bionairereg; console units fits Bionairereg; models C22 C33 W2 W2S W6 W6S W7 W9 W9H W9S W25 W0210 W0210S W0305 W0310 W0340 W3040 and WC0840. It also fits Holmesreg; model W6. This filter measures approximately 9 3/8 x 9 3/8 x 2. This Bionairereg; Electret is a dual air filter cartridge which includes the Micro-weave filter and carbon. Special two-stage design: Micro-weave filter to trap minute air pollutants and help prevent them from entering your home and the activated carbon filter helps to remove odors. For best results change air filter at least once per season or more often depending on air quality and use. This is an aftermarket filter.