Bingo, it was made by Horticontrol.
I use nylon leggings on the end of my cool tube works like a charm. Only thing is you gotta watch out for air flow restriction cause after a grow or two there's so much dirt, lint, etc caught up in it the fan has a harder time cooling my light and exhausting the cab. Change it every grow and you're good
$130 my ass lol... I like the paint strainer idea. Right now I use nothing and just clean it between runs they get pretty dirty near the end.
I don't get how that thing would work if I use it on a closed circuit and it starts outside the room? I will have a big black filter poking out my window?
This is the stuff I use, It is 12x24 and is 60micron. The green one is finer like 30 micron I think.
http://www.denniskirk.com/jsp/tpl/p...d=11102&skuId=305375&productId=p301500&mmyId=
I wouldn't use it for your situation, it's meant for indoor use.
As far as the price, it is a bit out of hand, I agree. Just passing along the info to the OP, as it's exactly what he's looking for.
Wow, that is actually pretty damn awesome, I might have to buy a couple sheets of that and make my own DIY Dust Shrooms!