Used to remove selected sub-entity of a curtain wall.

Accessed from:

• Ribbon: Building Design > Modification > Modify Selected > Modify Curtain Wall > Delete Entity

When executed, removes the selected mullion panel boundary, thereby merges it with the adjacent mullion panel. The pair of adjacent panels having selected mullion partitions them get merged into single panel. When a horizontal mullion is selected, the panel above and one below get merged, and for vertical mullion, the panels each to left and to right of it get merged into single panel.