Here are entered works on sheets or panels of wallboard made with a gypsum core covered with paper. Works on sheets or panels of various materials used as substitutes for wooden boards or plaster in the construction of interior walls and ceilings, including sheets or panels of plywood, fiberboard, gypsum drywall, and laminated plastics, are entered under Wallboard.
Here are entered works on sheets or panels of wallboard made with a gypsum core covered with paper. Works on sheets or panels of various materials used as substitutes for wooden boards or plaster in the construction of interior walls and ceilings, including sheets or panels of plywood, fiberboard, gypsum drywall, and laminated plastics, are entered under Wallboard.
