wrote in message
This answers the question, and the dazzling arithmetic is 300 years old
:-)


Sure, but you use it so well.


Just where and how do you run these vents and the appropriate air handler?

Put the vents in the ceiling. Forget the air handler.

Easier said than done. That is one reason the OP asked the question of HOW?


And lose the sarcasm, s'il te plait.

And Nick is bi-lingual also.