Time to get my rear arches done and having removed the panels I saw what look like some sort of access channel that appears to exit at the sides of the car by the bumper...I'm sure it'll become self evident when I get the bumper off but wondered if anyone knew what they are for...
Ant.
1995 M reg 2WD AFT in green/grey (and an Oakley Thermonuclear Protection decal for some reason!)
It's a vent with a one way flap to allow air to flow thru the van. Otherwise when you have the blowers on, or opened the front windows while driving, you would eventually build up a higher pressure inside the van .