Horti Control Dust Shroom !!

Anybody ever use one of these?

http://www.youtube.com/watch?v=p84CWGuyGaw

It's either this or a standard HEPA filter

I would use this to filter the air going into my 600 watt sealed reflector in a small closet grow

Later....

Yes, they would be fine to filter air for reflectors. The Dust Shrooms are basically just foam and rubber. They need to be cleaned and oiled regular to keep from drying up.