Any one use this type of venting ??

[wantboost]

http://www.duravent.com/ProductCategory.aspx?c=49

[NoDIY]

Seen it used on a few boilers. The stuff is not sucure enough for my liking. The clamp system leaves much to be desired.

No idea about cost comparisons but It looks expensive..

[bster352]

Not sure about Duravent but I believe the Centrotherm http://www.centrotherm.us.com/Products/InnoFlue-Single-Wall-Residential.aspx is less expensive and faster to install than CPVC 636