Toilet partition hinges usually are face mounted inside the cubical however they can also be mounted
on the outside for outward opening doors.
Handing is called from facing the hinge so Left is left hand etc, Butt hinges are the exception to this as
they are edge mounted.
Hold open and screw fixing is a most popular as it helps to cut down on vandalism on the doors.
Lift off pin design is common to comply with regulations but not available in the spring hinge range.