HIPA (Pack of 2) A226000031 A226000032 Air Filter for ECHO PB403 PB403H PB403T PB413H PB413T PB500H PB500T PB603 PB611 PB620 PB620ST PB650 PB650H PB650T PB651T PB755SH PB755ST blower Replacement manufcturer part number: A226000031 A226000032 For ECHO PB403 PB403H PB403T PB413H PB413T PB500H PB500T PB603 PB611 PB620 PB620ST PB650 PB650H PB650T PB651T PB755SH PB755ST blower