Definitely not cushion dust. It’s gravel road dust. I am missing the outlet cover for the electrical cord and on Canadian Westfalias the outlet is located on the bottom of the panel way underneath the other two. Wonder if that’s part of it. 

Thanks
Jeff

Sent from my iPhone

> On Jun 25, 2023, at 5:22 PM, Eric Caron <ericcaron96@comcast.net> wrote:
> 
> Nope, 
> 
>        I’m going with either a gap around the hoses or one or more of the plastic oval shaped body plugs is out.  Though it still seems like a long shot.  But not cushion as there is solid plywood between the foam and storage. 
> 
> What mysteries.
> 
> Eric Caron 
> 
> 
>> On Jun 25, 2023, at 11:15 AM, Alistair Bell <ragnarhairybreeks@ICLOUD.COM> wrote:
>> 
>> I think it could be degraded cushion dust .
>> 
>> Ab
>> 
>>>> On Jun 24, 2023, at 7:54 PM, Jeff Palmer <w.jeff.palmer@icloud.com> wrote:
>>> 
>>> Why is the storage underneath my Westfalia back seat always dusty? Where is it coming from??
>>> 
>>> Thanks
>>> Jeff
>>> 
>>> Sent from my iPhone