HIPA (Pack of 2) Air filter / Cleaner for STIHL FS120 FS200 FS250 FS300 FS350 FS400 FS450 String Trimmer Brush Cutter (Size: 3-7/16" x 2-3/4" x 1") # 4134 141 0300 New high quality air filter / cleaner Length x Width x thickness: 3-7/16" x 2-3/4" x 1" Replace manufacturer part number: 4134 141 0300 Fitment models: STIHL FS120 FS200 FS250 FS300 FS350 FS400 FS450 trimmer / brush cutter Qty: 2 x air filter