That square post is a mount for a door pull.
 It is exactly the same door pull that is used on the front of the door.
Usually the screw falls out and the handle gets lost.

Stan Wilder
www.engineceramics.com
----- Original Message -----
From: "Leon" <korkwood@WSHOST.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, August 21, 2004 10:08 PM
Subject: thingie on sliding door

> Not trying to interfere with "bear of a thread" but...
> I am trying to figure out the purpose of this thingie
> It's metal part consisting of mounting plate and square post, attached to
> upper trailing part of sliding door interior with 2 screws.Square post
> little over 3/4" long threaded on it's end.
> 83 Westfalia
> TIA
> Leon