Is this a good design?

[3kracing]

Just wondering if this a good box design or if I got a custom one could it be better?

http://img77.imageshack.us/my.php?im...z62sqin7io.png

[zins184]

For what?

[3kracing]

For the box I'm going to be building. I just saw it under the free box designs and was wondering if they're as good as if I got someone to design one especially for me

Edit-
For mobeious custom sub that I just bought