getting 2d stills from a 3D shape in Unity

Hi everyone

i m working on a project which involves Projecting onto an object I am building which looks like a cube.

I am building a 3D scene inside the shape. however naturall when I project on the object ( using 2 projectors). I need each side of the unity 3D object scene mapped out as 2d Images. In this way when viewed from different angles it will appear as if the shape holds the 3D scene.

Does anyone have any idea how I get a 2 image from each visible side. the bottom doesnt matter so just 5 sides of the shape I need to grab the images/camera view from

Regards
Leon