Bionaire 115 Carbon Filter.

Activated carbon filter 115 is a Genuine OEM Bionaire Filter.
115 Carbon Filter fits BT1000, BT100C.
Traps from the air over 4000 chemical substances and noxious odors.
Filter Dimensions, inch. 12.8 x 12.8 x 0.2.
Filter's Lifetime: 3 months on average.
Bionaire 115 Carbon Filter comes 1 filter per pack.