6
Ducts made wholly or principally of metal for trunking pipes or conduits for gases or liquids; fittings, fasteners and fastening devices, washers, plugs, clips, clamps, mounting pieces, brackets and bands, all of metal and all for duets for trunking pipes or conduits for gases or liquids
9
Electrical connections adaptors, branch boxes, distribution boxes, connectors, plugs, sockets, mounting and connection boxes and frames, all for electrical, audio, optical or data systems; telecommunication and data cable; optical fibre; electrical cable; housings, ducts and conduits, service pole connection units, all for trunking electrical power, telecommunications and data cable; electrical transformers; electrical apparatus and instruments; parts and fittings for all the aforesaid goods; all included in class 9
11
Ventilation and air-conditioning installations and apparatus; installations and apparatus for dust collection and removal; parts and fittings for all the aforesaid goods; all included in class 11
17
Insulating and fire retardant material for building; seals for cables, pipes and conduits; electrical insulating materials; pipes and junctions therefore, not of metal; compressed air pipe fittings; not of metal; parts and fittings for all the aforesaid goods: all included in class 17
20
Ducts made wholly or principally of plastics for trunking pipes or conduits for gases and liquids; mounting pieces; clips, ties, plugs, wall-fixing devices, clamps, fasteners and fastening devices; parts and fittings for all the aforesaid goods; all included in class 20