Thanks, I had looked into some mufflers, but really think the rigid insulation & fairly long run will take care of a lot of the noise. I feathered it back quite a bit
and there's still a lot of air coming out, so I'll just have to experiment and see what speed gives good cooling. Off topic, but that really blew my mind when I saw that post where a 1000 watter was placed in that glass cylinder or enclosure, and could actually be touched ! That's the kind of cool I'm shooting for.