Hello,
I am changing the cabin air filter that I bought through fastlane.
The part from fastlane has an air flow direction.

(A) Now what's the airflow on a 99ML cabin air filter?
Is it from right to left or left to right?

(B) I also bought the Mann engine airfilter. the underside of it is a completely different shape from the stock airfilter that is flat. The Mann airfilter on the underside is stepped. So if you look at it from the side, it looks like this:

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Now which is front (towards the firewall) ?

Thanks...