Coalescing filter assembly with high efficiency filter can be used where the concentration of liquid aerosols in compressed air is greater than what can be filtered by the 3MTM Compressed Air Filter and Regulating Panel W-2806 alone Coalescing filter assembly has maximum airflow of 50 CFM at 150 psig, temperature range from 32° to 130°F, and high efficiency of 99.97% when used with the high efficiency filter element.