Whatever fits, works for me. Have yet to see one listed as fitting that had not fit perfectly. The few 'generic' ones I have bought over the years (all different) removed particulates perfectly. Some of them were also of a carbon type, but even with them I still smelled other odors in areas like refineries/pastures, other areas. So, if you have money to burn, buy top of the line, I can't imagine it working any better than a generic at a much less price.

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