Product dimensions:
PD_87735: H: 12 x D: 14 x W: 35 Inch
PD_87723: - H: 10 x D: 22 x W: 23 Inch
PD_87720: - H: 9 x D: 18 x W: 20 Inch

PD_87735:
Polys: 80836 Verts: 82390
PD_87723:
Polys: 56519 Verts: 57874
PD_87720:
Polys: 59975 Verts: 61234

Pre-rendering with Corona.
Units: cm

Product links:
https://waclightinglights.com/product/lighting/ceiling-lights/pendants/wac-lighting-vornado-pendant-pd-87735-wt/1262148.html 
https://waclightinglights.com/product/lighting/ceiling-lights/pendants/wac-lighting-vornado-pendant-pd-87723-ch/PD-87723-57.html 
https://waclightinglights.com/product/lighting/ceiling-lights/pendants/wac-lighting-vornado-pendant-pd-87720-wt/1262146.html 
https://www.amazon.sg/WAC-Lighting-PD-87720-CH-Vornado-Chandelier/dp/B06XXZ4HJY 

Lighting collection:
https://3ddd.ru/collection/shared/5231974 

Corona:
For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of the materials is adjusted taking into account PBR.

Vray:
Those who work in V-Ray versions 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. Choose Blinn, Phong or Ward - whatever suits you best.