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> Just thinking about it real quickly, I think the air pressure would be > higher the closer you get to the windshield; therfore, they would work > better installed "backwards". In the UK we usually don't have fresh-air fans, but the air comes in pretty fast if you're on the highway - it'll blow small seeds and debris into the interior no problem. I think that area is a high-pressure one. If anything I suspect the airflow over the screen would be at lower pressure as it is flowing up and across the screen, and it wouldn't do that without a pressure gradient, would it? Dave (ready to be blown out of the water by the air-flow boys!). UK VW Type 3 & 4 Club http://www.hallvw.clara.co.uk/ ------ ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/