Non-metallic building products and materials included in this class; boards or blocks or panels for building purposes included in this class; all other goods included in this class; boards or panels composed wholly or mainly of fibres such as straw for building or decoration, including boards or panels for industrial, domestic and institutional buildings, load-bearing roof decking, wall lining, partitions, ceiling sub-floors, fire screen walls, accoustical correction, door cores, fire check doors, shuttering, partitions, ceiling and ceiling systems included in this class; fibrous composite structural members, frames for building; flooring systems; flooring parts, components and accessories including composite bearers and joists