MVHR none vented transit rooms

[General-Lee]

So currently building a house/class q barn conversion. Our builder mentioned a while ago about MVHR‘s which is something I know very little about or experience off, so took to the internet looking at prices and anything written to do with them. 
This site and also @Jeremy Harriscame up a lot. 
 

I’ve tried searching for any info on air transit paths but found very little, doorways pretty happy with, will purpose design architrave or gap under doors or both. 
 

But unsure how to get around circulating air from our master bedroom-walk in wardrobe-en-suite. You can get stainless steel grilles but think that’ll look unsightly, do I have a grille behind a nice oak beam or fit a vent/valve each side of the en-suite-wardrobe? 
 

Any help on how you’ve got round this would be greatly appreciated, oh and hope my ramblings make some sense. 
 

 

[ProDave]

You will need a supply vent to feed fresh air in to the bedroom, and an exhaust vent to remove stale air from the en-suite.

 

What don't you understand?

[General-Lee]

Going on the design I’m guessing the en-suite door is fairly well sealed up and there is a T for transit on the wall between the shower and wardrobe and T from wardrobe door to bedroom.