Steven Ward might have some deluxe wood paneling to sell....from his old bathroom. I'm sure it is on the market at the going rate of $15.00 a running foot.

check out prodema

there's also engineering woods like:

-parklex
-trespa

both which come in the sizes you stated

13 layer ply and spar urethane and you are good to go

thanks for all the help, it made things a ton easier

i cant remember the name of the company off the top of my head, but there is a place that makes skateboard ramp panels that can also be used as building panels maybe if you google it

b_dub is talking about RampX, although if you're planning to use it for an architectural application, the supplier will sell you RampX (but refer to it as Richlite) and charge you 3x the price.

good to know, thanks b_dub and dml