What are these for?

[FuturPilot]

These two panels were in my finish kit. I'm building a 7. What are they for? Or were they sent mistakenly?
Thanks

 

[eatonair]

They get bonded inside the upper cowling. It's shown in the drawings and builders manual.
Just when you thought you were done fitting the cowling!

 

[FuturPilot]

Thanks, I'll be using a different cowling.
So, I have these available if anyone needs them. They were wrapped with the oil door, may be able to use it.

 

[D-Dubya]

If you're using a plenum, you won't need them at all. If you're going with standard baffles & baffle seals, those are needed to smooth the airflow from the inlet to the top of the cowling and minimize "burbling" and pressure drop. Of course, that depends on what cowling you're using and if it already has those pieces on the top half.