Slanted boxes and ports

[Adrian_D 520]

I need to build a slanted box and obviously the port is going to need bending.

Should I go with a labyrinth port or an l-shaped port ? How do I calculate the lenght of the port, because the top part of it is going to be shorter than the bottom. Should I average the lengths ?

A couple pictures might help...

To my understanding that would be an overall length of ~40cm. Am I right or am I terribly wrong ?

[Acidburn 10]

I'm not sure about that lean, but what you could do is make that second wall of the port vertical and adjust it's distance from the back wall so that trapezoidal area has the same area has the first part of the port

[Adrian_D 520]

I'm going that way then.

Thanks Tom