Air filter media aim for particle-free, clean intake air. For modern engines which take in large air volumes, that’s especially important. Because unfiltered air means dirt particles getting in to the combustion chamber causing heavy wear on all engine parts. Choosing the right air filter media can also mean reducing oil and fuel consumption. The critical criteria for classifying filter media for air filters are air permeability and efficiency which correlate to pore diameter. Flameproof papers offer you the security that burning items in the air intake won’t lead to a fire in the vehicle.