Linear LED luminaire for Armstrong ceiling rails 15 and 24 mm wide. Laconic rectangular case made of aluminum for surface mounting. Lines and geometric shapes on the ceiling can be made from lamps. Suitable for creating comfortable lighting in offices and commercial premises. The connection driver is supplied separately.

Dimensions: 1200×25×28 mm
Color temperature: 3000K, 4000K
Luminous flux: 2400 lm
Beam Angle: 120°
Color rendering index: CRI>80
Degree of dust and moisture protection: IP40
Power Consumption: 26W
Power supply: 48 V
Body color: white

https://arlight.ru/search/index.php?q=SNAP-STARLINE-FLAT-S600-13W 

“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"