WOW! Your landy dressed up for Halloween.
I have the same style dash with the air con and no opening fresh air vents, minus the sexy colors.
It is standard on those years that have a/c fitted.
I've seen a few of these on ECR's website (east coast rovers) where they restore north american spec defender, and rip out that dash and hvac system for the newer style.
Nothing unusual, except for the colors maybe.
Cheers
Thanks for all the reply's guys. My AC unit is the under bonnet type, not the under dash one which seem to be on the US spec ones.. The vents are vertical, but are fed from a horizontal hole below them - it does not look like the typical dash with an angled panel behind.
I guess I'll leave it that way for the time being, if it's not broke etc.. Hitting 40C here, so just got to hope the ac keeps plugging away!