There are 3 sizes of the luminaire in the archive: 416mm, 625mm, 833mm - the length of each beam.

You can buy a lamp on the website: https://ulight.ru/ 
Link to the lamp: https://ulight.ru/goods/9268 

Brand: HOKASU
Collection: Star
Profile material: aluminum
Case color: black, white, any RAL
Light color: warm white, day white
Luminous flux, lm: 3200, 4600, 6400
Power, W: 32, 46, 64
Number of rays: 3 or 4 to choose
Beam length: 416mm, 625mm, 833mm, individual