Bionaire A3502C Carbon Filter.

Bionaire A3502C Carbon Filter is a Genuine OEM Bionaire Filter.
Bionaire A3502C Carbon Filter fits CH3550, CH3580.
Bionaire A3502C Carbon Filter traps over 4000 chemicals and odors.
Filter Dimensions, inch. 15.2 x 14 x 0.4.
Filter's Lifetime: 3 months on average.
Bionaire A3502C Carbon Filter complements A3501H HEPA Filter.
Bionaire A3502C Carbon Filter comes 2 filters per pack.