With a regular curtain wall, the glazing portion is classified as
PredefinedType set to
However, curtain panels are only used as
an exterior wall of a building which is an assembly of components, hung from the edge of the floor/roof structure rather than bearing on a floor. (source)
There are other walls which have
IfcMembers too such as shopfront walls or internal office partitioning with glazing. How should we properly classify the glazing portion in this scenraio?