Washable Air Filter – 42QHNA2008A-R Fits Carrier Models 42KPX036—–APO 42P350CX—–APO 42P350HX—–APO 42P400CX—–APO 42P400HX—–APO 42P450CX—–APO 42P450HX—–APO 42PQV110S—-APO 42XP100C7—-APO 42XP100H7—-APO