The model is made according to the dimensions and photos from the website:
https://progress.lightingnewyork.com/product/lighting/wall-lights/wall-sconces/progress-cumberland-sconces-p710076-031/1846319.html 

The model has a Turbosmooth modifier assigned to it in Render Iterations=2 mode, which is applied only during rendering.
The obj file contains a model with Turbosmooth applied.

Dimensions:
height 37.1 cm (14.6 in)
width 13 cm (5.1 in)
depth 10.2 cm (4 in)

All objects have normal names.
All materials have convenient names.

Model weight: 9106 polygons, 9223 vertices

Pivot Point is aligned to the center of the model.

Those who work in V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you.

For Corona render, it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR.