Fans, Fans, Fans

It's just a box bolted tight to the air in side of the blower. I can't provide a picture it's in use and not accessible to photograph. I did use the side of the tub as my entry point it was the flattest point and the easiest place to seal up tight.

It's just a box with a few holes same idea as your air box on your FAU system that feeds your house.

To quit your air in you can put a vent pipe over the intake even a short piece will quit it more then you think. They also make sound mufflers that take most all the sound out you may want to think about that too.

Check out the Duct Muffler
http://www.discount-hydro.com/ventilation.asp

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.

That was with the cool tubes i used last time. This time i'm back to my light mover and single hood with 1000w HPS.