Where to find Pre insulated Pex-Al-Pex (only need 30')

Does anybody know where to find some Pex-Al-Pex that is already insulated, or any ideas on how to insulate it? I am going to run it in a 6" pipe for 25'. Would use 1", 1 1/4" or 1 1/2"... Wish I could find it with a foam cover or something, the only applications I can find is the foil wrapped stuff in the black corrugated pipe. The other problem I have is most places have a 100' minimum.

Try giving these guys a call.

http://www.mainlinehs.com/Site/CentralB ... 4AodhVrjoQ