?Material synthetic fibre fibreglass
Initial resistance 48Pa 38Pa
Final resistance 230Pa 190Pa
arrestance 91% 90%
wind speed 1.0m/S 1.5m/S
air flow 900 m³/h 3900 m³/h
Temp. ressitance 120? 150?
Thickness 10mm/13mm 25mm/50mm
autoroll filter paper