Bionaire 325 Air Filter.

Bionaire 325 Air Filter is a Genuine OEM Bionaire Filter.
325 Air Filter fits CM2.5, CM3, CM3S, CM4, CM6, CMP3, CMP5, CPO310, CPO315, CPO470.
Bionaire 325 Air Filter is used to clean the air from dust, pollen, smoke particles, etc.
Filter Dimensions, inch. 7.7 x 2.0 x 0.1.
Filter's Lifetime : 2 to 3 months*
Bionaire 325 Air Filter comes 1 filter per pack.