A softwood plywood panel applied to the ceiling structure, typically nailed to the ceiling joists or the roof rafters. Better-quality finishes have matched edges, while a lower quality level probably uses some type of strip to cover the butted joints.
For hardwood plywood panels, use component GP (Plywood, Hardwood)
Enter the following for this component:
Percent of Total Floor Area: 1 – 100, or
Ceiling Area (Square Feet)
Ceiling