Double Sided breadboard for test bed

[Bpk9p4]

I was wondering if anyone had ever run across a double sided bread board where you can plug in cables from the front and back.

The reason i am wanting this is i am making a test bed box for are software team and i want an easy way to get PWM cables from inside the box to outside. I know i could just drill a whole but it would be nice to be able to quickly connect PWM cables without having to run wires in and out of the box.

To give you an idea of what i am trying to do i attached a picture