In a message dated 10/6/99 2:07:16 AM Eastern Daylight Time, bjohns@DTX.NET
writes:

<< Speaking of heaters, Anybody know where to get the short exhaust
 piece
 that extends from the outlet of the BA-6?
  >>

all it is is flexible exhaust tubing.  you can buy it anywhere.
(oh, sorry eric, i guess i am annoying you with this post)
chris