I installed these a couple months ago and they look great. Installation was easy and the instructions are detailed. My one complaint is that 3 out of 4 of mine are now clogged (I think it's little pieces of the cement board) and they're not easy to unclog. That's partly my fault, I should have been smart enough to install a screen in the elbow, but it doesn't mention anything about a screen in the instructions either.. Jen F. Peabody, Ma, United States. Thu Aug 13 2015