http://www.wired-designs.com/ceiling/opus-ceiling/ 

Opus Double Tier

Finish
Plated Polished Nickel with Clear Triadri Prisms

Dimensions
50" L X 30" W X 23" BH X 40" OAH

Lamp
LED STRIP LIGHT; 13.5 WATTS P/M

Weight
180 LBS; 82 KGS

The model is based on the original manufacturer dimensions and technical data.

Materials and groups are named the same, as the model.

Instance geometry, one multi-submaterial for model for easy change or setup.

Object at 0.0.0, clean and light scene.

The archive contains the OBJ file and more previews.