Originally Posted by Dr_KY
I use stainless but some people use PVC and if you knew what that stuff was made of then galv should be ok for exhaust. (IMHO) The heat isn't high enough but for legal reasons I will say do not use galv.
Yeah, I thought about PVC, but at least decided to go with Gal over that.
I will take back the Gal and see what else they have (I didn't have much time to ask and/or get one threaded... etc)