From what I can remember they was focus RS vents, they worked perfectly at getting the heat out, as for rain well I had to put a cover under the bonnet lol, I didn't do this at first and what had happened was that water had got into the spark plug on cylinder one and caused a really bad misfire, fine driving in the rain but not when the car wasn't moving or on etc.
I have seen people make custom ways to catch the water from under the bonnet so that it doesn't affect the engine at all.