Door casings, not of metal; door frames, not of metal; door jambs not of metal; door panels, not of metal; doors of wood clad in aluminum; non-metal door parts for buildings, namely, adjusters for adjusting the height of a door, floor boards, columns, beams, paneling boards, sills, sleepers, backings for ceilings or walls, stiles, rails and ceiling boards; non-metal door units; non-metal doors; exterior window shades, not of metal and not of textile; non-metal interior storm windows; window c...