Assertion: mullion's member | /r/CapableOf | serve as interior trim
Facets:
value: for curtain wall
type: PURPOSE
value: for the window
type: PURPOSE
Source sentences:
text: The present general form of mullions for use in large windows and in curtain walls of large buildings is usually of two parts, one of which is erected vertically across an opening to carry wall and window panels and is usually an external U-shaped member and the other a member to be used exteriorly to close the open back of the U-shaped member and to serve also as interior trim for the window or curtain wall.