19 Processed timber products and lumber, namely, building, manufactured, better, shop, cutting grade, sawn, worked, semi-worked, rough-sawn, gauged, treated, and dried timber; wood veneer, plywood and laminated wood; building materials incorporating timber, namely, ceiling panels, floor panels, shaped timber, wood paneling, wood trim, wallboards, fingerjoint studs, baseboard, skirting board, wood siding, patterned wood siding, wood stiles, wood moldings