After looking at the pdf installation details on the Kozy Kollar...I'm not impressed at all. I'd rather do a cheap HD no caulk.
Old School Said: Why didnt they just install a no caulk pipe vent?
I dunno. A heating & A/C / Plumbing company put two of these in.
EGG-- what else do reccommend besides LEAD?
"No-caulk" pipe vent???????? I can't believe you just said that. No matter how good your work is, and I know it is very very good, those things are JUNK. There are such better ways.
Why didn't they just install a no caulk pipe vent?
Yes it is thick.... and has 6 bolts going thru the deck!