19 Wood and artificial wood, namely trim, posts, veneers, boards, beams, joints, panelling, panels, siding, floors and flooring, frames, ceiling, walls and posts; Non-metallic building materials having acoustic properties, namely trim, posts, veneers, boards, beams, joints, panelling, panels, siding, floors and flooring, frames, ceiling, walls and posts; Acoustic wall panels, not of metal; Building materials of wood, namely trim, posts, veneers, boards, beams, joints, panelling, panels, siding, floors and flooring, frames, ceiling, walls and posts; Intumescent construction materials, namely trim, posts, veneers, boards, beams, joints, panelling, panels, siding, floors and flooring, frames, ceiling, walls and posts; Stone veneers in the nature of building materials; Fiberboard in the nature of building materials; Fire retardant non-metallic wall panels for use in construction; Construction materials of artificial stone, namely trim, posts, veneers, boards, beams, joints, panelling, panels, siding, floors and flooring, frames, ceiling, walls and posts; Interlocking panels non-metallic wall panels for building