1.   Bead board on the ceilings articulated the rooms without the expense or clutter of wall moldings.

2.   One end of the crosspiece will snap into the slot in the brace, while the other, the cut end, will rest on the wall molding.

3.   The entire grid is supported in the center by wires that hang from the joists and along the perimeter by wall molding.

4.   The first step in installing the ceiling is to nail the wall molding in place.

5.   Carpenter said it still is not clear how the listening device was planted in a strip of wooden wall molding, or by whom.