I'm coming in late on this and to tell you the truth I've
really not been paying too close attention other than to
note that you got yourself a Torit (suck!). Anyways,
apologies if this is trodden soil and all but there are a
couple of links that I've come across/been exposed to that
you'd might want to look at.
The first is Wynn Environmental. These people seem to have
been paying attention to the wants and needs of wooddorkers,
'specially wooddorkers with a need for big ass pleated
The second is for American ('Murican) Filter Fabric. They
also seem to be knowing what's what but I think they are
limited to bags only.
I'm in the middle of contemplating what to do with my
Murphy-Rodgers (like a Torit/different/this one doesn't
quite have the "suck factor") blower so I've been eye
balling the American Filter Fabric site.