mm wrote:

On Sat, 09 Aug 2008 22:33:34 -0400, mm
wrote:

I've looked for a definition on the web and it seems that T1-11 is
hardboard. But I've also seen it called plywood. Which is it?

Wow, there was a lot more to this question than I thought there was.
That's often the case. I'm glad I asked. Thanks, guys.

FYI - The botton of the door on my 25+ year old shed was rotted so I needed
to replace it. A few trips to the home centers showed 2 products that
looked similar. One was a hardboard but the other, the ONLY one actually
labeled T1-11, was plywood which is what was on my shed. I purchased the
latter. It is in fact plywood and matched the old one perfectly.