FREELIGHT WALL is a flexible neon wall lamp that can take any shape from Centrsvet
https://www.centrsvet.ru/catalog/freelight_main/freelight_wall/ 
The length of the tube and the dimensions of the fixtures are indicated on the preview
Tube diameter 25 mm
Neon tubes are not editable – converted to editaible poly

For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured taking into account PBR

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 – whichever suits you best