The data that you mention is on the Alu-Rex.com web site. And you are right that is what is reported. There are conflicting reports about the data, when it comes to water flow. Alu-Rex reports 301" and Alcoa reports 32.9" see their brochure:
I actually called the Alcoa headquarters to clear up this conflict and I was told to use the 32.9", so I would rather report lower rather than higher. I'm not sure why this conflict exists but I hope they clear it up. Either way it handles alot of water as does your product.
I don't know if you were implying that I am an Alcoa employee, but I'm not, just a loyal contractor that believes in what I install.
Look Tim, I am not trying to create any enemies, I just get irked when I see a product that I install get picked on. Plus the person that posted the original comment about Leaf Relief is a friend of mine too. No hard feelings!