For installation I would like to say only so much that you should do the actual ceiling mount for higher ceilings for two if possible 1st, 2nd lampshades attach using the supplied tool and 3 should have tentatively mounted lampshades once before the ceiling installation. Everything else on this subject has already been described in previous reviews.
The overall impression: Very Classy and high quality. The metal parts of the lamp in brushed stainless steel provide a nice contrast to the ceiling. The lampshades made quite massive translucent glass throwing one hand a beautiful light-shadow patterns on the ceiling, lit the other hand, my 15 square meter, 2.80 meter high living room perfectly. The energy saver supplied, initially something getting used to for me you can actually recognize as such only when the light is turned off.
Side note: The individual lampshades are not positioned.
Otherwise: strong buy recommendation!