AIR FILTER COMPATIBLE WITH : STIHL brush cutter: FS 40, FS 40 C, FS 50, FS 50 C, FS 50 L, FS 56 FS 56 C, FS 56 R, FS 56 RC, FS 70, FS 70 C, FS 70 RC STIHL hedge trimmers: HT 56, HT 56 C STIHL multifunction: KM 56, KM 56 C, KM 56 R, KM 56 RC STIHL lawn mower: FC 56, FC 56 C, FC 70, FC 70 C Height in mm: 7.00 Air Filter Design: Special width in mm: 59.20 Length in mm: 77.60 PART NUMBER: 176-922 ORIGINAL CODE: STIHL 4144 124 2800 CZ