Replacement HEPA Type Filter For Hapf30, Hapf30D, Hapf30D-U, Bapf30, Filter A by By Breathe Naturally Fits Bionaire model BAP242, BAP422, BAP1422, BAP815, BAP825, BAP825-U, BAP1500-U, BAP2000-U and BAP2001. 99.97% HEPA Filter + Carbon filtration! Change your filter every 6 to 12 months depending on the air quality in your home or office. Breathe Naturally Green Repllacement Hepa Filter