Whats the purpose of this flap then mate?small update again-
Found a nice replacement for the lower vent, it's a GM item but NOT for the MK3 My old one was damaged and the thin rubber flaps werent doing their job.... This one is a better design, the flaps are a full plastic section with rubber around them to seal so should do a much better job than the mk3's. I havent actually fitted yet but have offered up and looks like it's a straight replacement-
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Finished the lower section repairs-
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Then added plenty of seam sealer -
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