4851 Timber balustrades (3) Balustrades consisting largely of a timber structure, including infill and handrails. Balustrades that are separate elements from the building fabric and when not associated with and/or included in other work sections 4852 Metal balustrades (44) Balustrades consisting largely of a metal structure, including infill and handrails. Balustrades that are separate elements from the building fabric and when not associated with and/or included in other work sections 4855 Glass balustrades (43) Balustrades consisting largely of a sheet glass structure, including infill and handrails. Balustrades that are separate elements from the building fabric and when not associated with and/or included in other work sections 4856 Composite balustrades (0) "Balustrade and barrier structures consisting largely of a mixture of materials or uncommon materials, including mixed material infill and handrails. Balustrades that are separate elements from the building fabric and when not associated with and/or included in other work sections"