... and practical 3) High temperature resistance Plank temperature resistance filter,high temperature air filter,plank air filter 1) Application: Avoid tar, soot and dust from ... ) Average arrestance: 85%,90%,93% , (ASHRAE52.1-1992)8) EUROVENT4/5 classEU3, EU4, EU5,9) Final resistance: (suggest) 250Pa-(max) 300Pa ...