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QUOTE=atgreene]Interesting.
When I took the cert class from Presby they were pushing them pretty hard for commercial apps. I've only installed a couple, primarily because of their limited space requirements, although an Eljin In-drain takes less room, so we use them a lot around the lake.
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I have been installing Presby for over ten years and never has one fail yet. The Eljin are another story! Over 50% failure rate of the ones we know of people in
stalling. We stopped using them years ago.