Here ya go. Look at the last row of pics--also a couple in the Details section.

Here is a link that might be useful: Our 10X12 HFGH

Thanks Laserfan,
Does that wall heave at all?
what kind of movement does it get?
Tom

Hi Tom if anything the TechShield (1/2" or 5/8", I forget) stiffens the wall a bit, and the heater is only 15lbs so there's really no impact from this addition. I haven't installed my Exhaust Fan yet but with its motor it is MUCH heavier and will be mounted high-up and still I expect zero problems. But about the heater note also from my Details pics:

1. Their are horiz braces immediately above & below the mounting board
2. One of the two uprights left & right has a 3/4" EMT crossbrace at the top
3. The foundation is absolutely rock-steady-unmoveable

I guess I disagree that "the walls are pretty flimsy"; you should do just fine unless your HFGH is not reinforced and "breathes" too much. But this would mean bigger problems for the GH than just your heater wall!!!

I think if you don't have at least two add-on cross-braces at the top of your stud walls you are asking for trouble big-time.

Thanks,
I actually do have 4 crossbraces. It has stiffened things up quite a bit. I was just concerned about the weight because those studs are very thin and flimsy. I was thinking they could buckle, not movement in and out from wind but from weight.
Please take pictures of the fan as it goes in. Can you take close-ups? I've only installed a ceiling fan and an exhaust is the next step.
Thanks again,
Tom