6
Structural building components made principally of both wood and metal, with metal being the predominant feature; load-supporting beams made principally of both wood and metal, with metal being the predominant material; roof trusses, joists and rafters made principally of both wood and metal, with metal being the predominant feature; floor joists of wood with metal spacer members, with metal being the predominant feature; metal fixings; metal clips; braces of metal for handling loads; metal brackets; metal joining devices for joining together parts of timber structural building components; nails
19
Structural building components made principally of wood and metal, with wood being the predominant feature; load-supporting beams made principally of wood and metal with wood being the predominant feature; roof trusses, joists and rafters made principally of wood and metal with wood being the predominant material; floor joists of wood and metal spacer members, with wood being the predominant feature; non-metallic materials for use in building and civil engineering construction; partitioning and panels made from compressed straw; non-metallic building materials having moisture resistant and/or fire retardant properties; building panels; building materials and products for internal use in buildings; building panels constructed predominantly from non-metallic materials; plasterboard panels; building materials for internal use in buildings