1.5" Inlet Enginaire Composite PreCleaner 1.5-3/20 with 3 - 20 CFMOne New Aftermarket Replacement Enginaire Composite Pre Cleaner (with 1. 5" Inlet) that features everything listed below: 1. 5 Inch Inlet Size 3 to 20 CFM Range Saves up to 12 times the Filter Life Self Cleaning (meaning no dust bowl to clean out) Saves up to 25% on Lower Engine Maintenance Pre Cleaner is Molded & Fiber Filled Saves up to 15% on Oil Costs Removes up to 99. 9% of Larger Airborne Particles Saves up to 10% on Fuel Costs Removes 94% of