AIR FILTER COMPATIBLE WITH : STIHL blower: BG 45, BG 46, BG 55, BG 65, BG 85, BR 45, BR 45 C STIHL Suction Shredders: SH 55, SH 55 C, SH 85, SH 85 C Height in mm: 11,60 Air Filter Design: Flat Width in mm: 60,00 Length in mm: 74,80 PART NUMBER: 176-923 ORIGINAL CODE: STIHL 4229 120 1800 CZ