Reply by JJohnston

I use the blast gates that came with my Clearvue. They’re designed to fit directly over 6” thinwall PVC (ASTM D2729 or SDR 35). Some people don’t like them because they’re not the self-cleaning design, and because the gate part isn’t captive, so it can come all the way out. They’re fine with me. They’re available separately, 3 or 6 at a time.

-- "A man may conduct himself well in both adversity and good fortune, but if you want to test his character, give him power." - Abraham Lincoln