Dimensions:

length:30 mm
width:30 mm
height:70 mm

length:30 mm
width:30 mm
height:115 mm

length:40 mm
width:40 mm
height:100 mm

length:40 mm
width:40 mm
height:140 mm

Polys:91556
Verts:91508

Obj included.

No unhide objects.

Preview rendered in Corona 6.

System unit mm.

No plugins used.

https://vibia.com/en/int/collections/ceiling-lamps-bind-solo-ceiling 

Bind 03 Solo Ceiling Lamps By Vibia