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Interesting. So will it stop exhaust particulates from entering the cabin?
"The accumulation mode of diesel engine particulates is made of sub-micron particles of diameters typically ranging from 30 to 500 nm (0.03-0.5 µm) [Kittelson 2002], with a maximum concentration between some 100-200 nm (0.1-0.2 µm)"
From:
Diesel Exhaust Particle Size
dieselnet.com
Genuine question.