I've added weatherstripping around the lid of the battery box to block the air flow, and when I went to a sealed battery, blocked the vent hole. (as I noticed this was also letting moisture in and rust the battery box.

Todd
'88 Westy

 -------------- Original message ----------------------
From: Ryan Miller <rmiller@AZTECA.COM>
> At highway speeds or near that I have hot air blowing into the cabin via the
> battery box. I presume these boxes need to be vented and the holes to the
> underside of the van are where the hot air is getting in, but I'm wondering
> if anyone else is experiencing this and how/if they've dealt with it.
>
>
>
> Ryan
>
> '82 camper van 'Beethoven'