For cars,tractors,mconstruction machinery and other internal-combustion engines to filter air Product TypeTermsSHK108Grammage (g/m2)135.0±5.0Thickness (mm)≥0.42Air Permeability volume≥300Burst Str.(Kpa)≥340Mean pore size 100Volatility % 2-5Stiffness (mgs)≥2000Water-resistant (min )≥1Moisture (%)5.0±2.0For cars,tractors,mconstruction machinery and other internal-combustion engines to filter air ...