Size:

Type A Ø 80 × 100 mm
Type B Ø 80 × 145 mm
Type C Ø 80 × 135 mm

“Who works 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 - whichever suits you best"

Polys: 22848
Verts: 23657

Vray and Corona versions included

https://www.lampatron.ru/cat/item/design-lamps-piet/