Transfer grille: simplification
 

How would you model this door transfer grille without all the louvres?

http://img.archiexpo.com/images_ae/p...lle-232495.jpg

It's not a major feature in the room, just the outlet on a wall.

I'd appreciate your experience with this sort of thing?

Regards,

I would use a porous jump (2d surface) to capture the pressure drop across the grille.

REgards
Luke