Skools posted this in the links section:
http://www.wellcraftv20.com/cgi-bin/...num=1187925715
I found this place:
http://www.plasticlumberyard.com/pla...htm#Industrial
And if you do a google search, you could find other materials,
I can't find the link anymore, but I did find a place that sells
the plastic bathroom partitions
and a place that sells the textured plastic sheets.