The Bjerg Crown Assembly have been originally been manufactured in 2 different sizes.
Diameter 16 mm : Portlight and Windscreens
Diameter 20 mm : Skylights
Today we can only deliver the 16 mm model.
As long as the hole in the glass is 8 mm, the 16 mm Crown Assembly will be OK also for Skylights. However, the screw holding the Exterion parts togethrr with the interior parts needs to be exchanged, as the glass of the skylights are 2-3 mm thicker. Exchanging the screw is no problem.
