You are looking at the finest Air Filter on the market today! This filter doesn't trap water and other harmful contaminants it blocks them! The advanced Element in this Air Filter, filters down to .85 microns while still maintaining excellent air flow. When the element inside the Air Filter becomes completely saturated it stops all air flow and will not allow you to spray or operate any longer until the element is replaced. This is important to the quality of your paint or powder coating job and to the maintainance and longevity of your pneumatic tools. Other filters will allow you to keep opperating even after the filter is spent and you would never know untill ITS TOO LATE.