non-metal building materials, namely sawn timber, building panels, wall and ceiling coverings of wood, cork, rubber, plastic or substitutes for these materials, wainscotings; wood for construction purposes namely boards, beams, profile planks, planks and strips; windows, doors and fences, parquet floor boards, parquet flooring, non-metal floors, gymnasium floor panels, laminated floor panels, athletic flooring, wood veneers for construction use