Air Filter / Stihl 4137 124 2800Pack Size:1Stihl 4137 124 2800, Stihl 4133 124 2800J. Thomas T-788, J. Thomas SL-442, J. Thomas 4133-124-2800, Laser 93327, Landscaper Express 4137124, Landscaper Pro 4137124, Mow More ST100709, NHC 207-7161, Rotary 11807Stihl BG75, FC75, FC85, FS75, FS80, FS85, FS85R, HL75K, HS80 and HS85Length: 2 3/8 ", Height: 1/4 ", Width: 2 3/8 "