These work well, but the "coolie caps" on the 3/4 size I ordered did NOT slide around the 3/4 type M copper pipe I had bought. I had to take both the caps to a drill press to get them to fit around the pipes. I was going through TWO roofs so I had to drill a total of 4 caps. Not the end of the world but if I did not have a HUGE drill bit and a drill press on hand the caps would not have been usable and the entire product would have been a wash. So until AltE gets their quality control on board with these, you may want to ask that your order be checked manually before it is mailed out. It will save you the time and hassle I had to go through.

As for the flashing, it was easy to use and easy to cut when I had to overlap the base with one of the pipes. A simple tin snip did the trick. I used these in a Heliodyne SHW installation. - Thanks for reading.

This review has votes.