DUAL LAYER DVD 10's? DARK BLUE?

[defense]

Up to this point, i've realized that all movies I have which have the widescreen version on one side and the standard or full screen version on the other...are DVD 10's......but I've now seen that DARK BLUE has the standard version on one side with the widescreen version on the other...but both versions are over 6 GB's and are obviously on DUAL LAYERED disks...just thought this was interesting because I hadn't seen it before...what is this..a DVD-11 OR DVD12 or something?

[adam]

Its called a DVD-18 because they are a DVD-9 on each side. They are fairly rare just because they are the most expensive type of DVD to manufacture. I've run across a few of them before.

[defense]

thanks for the reply Adam...I figured they were rare as I have not seen any of them until today...nor had I ever seen a post that said anything about DVD-18...but I guess it makes sense..since 9 times 2 is 18...I THINK...