To avoid uneven mitre-cuts at corners, these lacquered rectangular wood inserts are available to trade fitters. They are glued in place on inner or outer corners, or as an end-piece to the profile, resulting in a finish that is not just practical, but which looks good, too.
The corners are available in a wide range of woods, colours and sizes, so that the
very highest standards of perfection can be achieved specifically in this
field.