Heater mounting

[Gastrap]

I found this picture today, never seen one mounted this way.
I guess with the bleed valve where it is this makes sense, but is it common?

 

[jblack6527]

hmm. I've never seen one like that either.

 

[gimpyrobb]

6 of 1, half a dozen the other.

 

[Gastrap]

I've seen another with the air intake re-cut in the side panel directly in line with the hole in the housing. Sure made the hose fold up nicely.