Pre-Filter / Red Max 544271601Pack Size:1Red Max T4012-82320, Red Max T4012-82321, Red Max 544271601J. Thomas EB-7008, Laser 93323, Landscaper Express 82320, Landscaper Pro 82320, NHC 261-0496, Oregon 30-955, Rotary 10311Red Max EB7000 series and EB8000 series