Create a culling plane/box

Hi all.
I am creating a project in which I need everything below a certain point not to be rendered, as though passed the culling plane on a camera. Is there anyway of creating an invisible plan that will hide anything behind it, or create a box that would hide things inside it.
Objects will be coming through this plane, hence why I need some form of culling rather than simply making whole objects invisible.

I did!

This page pretty much has the solution I was after.
Hope it helps.