Transparent material

Is there a way to make a material in rhino transparent from one side? So you can put a plane where the ceiling of a room is and ‘see’ the ceiling when you’re rendering inside but the light from the hdri will illuminate the interior? I think this can be done in SketchUp. Can it be done in rhino?

Thanks for any advice you can offer.

Not with the current materials. If you don’t mind using Raytraced you could create a custom shader for that with GhShaderNodes.