A Gas J is a somewhat utilitarian fixture
although we have had some that are quite fancy.
The simple ones were often the fixtures for the
Kitchens and the Servants Quarters. They were
also used over Washstands on the sides and
in the corners of bedrooms.
Nowadays they make a great small hall or
small room fixture. In a bathroom with a
pair of sconces, a Gas J can make a great
ceiling fixture. Three Js over a Kitchen Island
has been done.