A series of LED wall luminaires with an open ring shade with external LED illumination Lampatron RIN Height: 200-300 mm Diameter: 230-330 mm Polygons: 27072 Vertices: 13552 Turbo Smooth stack is open Who works in the V-Ray version lower than SP1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than SP1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - which is preferable for you. https://www.lampatron.ru/cat/item/design-lamps-rin/