Replacement HEPA Filter plus Carbon Layer by Magnet by FiltersUSA.  This filter replaces the Bionaire version.  Fits Models BAP242, BAP1442, BAP815, BAP2000-U, BAP2001, (BAPF30) NOTE: This filter will not Fit BAP412 & BAP422 and other Tower units. It has a chipboard frame instead of plastic.

Bionaire Replacement HEPA Filter BAPF-30 (HOL30F) - B009CENX54