Arith wrote:Boxer wrote:So then wouldn't the size of the vent opening be unchanged?
The original vent opening size remains the same, yes. The ARC lip works by fitting over the vent to enlarge the opening by another 5mm, sort of like a funnel effect (according to the pic).
Think of it as you driving with your window open. Stick your hand out and forward a little bit. That little extension captures and diverts a bit more air into the window. Not sure if that's the best example.
Roger that, thanks Jim