6 Tubes, pipes, valves, drains, drain pipes, and drain traps; manhole covers; gutters and fittings therefor; metal flashing; plumbing fittings and accessories; bath and shower enclosures; ducts and pipes for central heating and air conditioning installations; tanks, baths, trays and sinks; clips, supports, elbows, junctions, and accessories for all the aforesaid goods; all made wholly or predominantly of metal.
9 Thermostats; water temperature control and monitoring apparatus; time clocks, switches and controls for boilers, air conditioning and central heating installations.
11 Air conditioning, heating, cooling, drying and ventilating apparatus and installations; installations and apparatus for the supply of gas and water for domestic, industrial and sanitary purposes; safety and control apparatus and equipment and parts and fittings for all these goods; trunking, pipes, conduits, flues, channelling, ducting, covers, clips, caps, blanking plates and connectors therefor, all being parts of domestic or industrial air conditioning, heating, cooling, drying, ventilating or water supply installations; toilet seats, toilets, basins, bidets, flushing apparatus for water closets, wash basins, baths, urinals being sanitary fittings; heaters and heat emitters; radiators; boilers; water heaters; level control valves; flow control apparatus for showers and basins; baths; bath installations, and bath fittings; apparatus for filling baths; taps; showers; shower valves; steam and water mixing apparatus; ancillary shower equipment; shower cubicles; water softeners; regulating and safety accessories for water and gas apparatus; parts and fittings for all the aforesaid goods.
17 Flexible non-metallic pipes for plumbing; pipe junctions and non-metallic pipe reinforcements; insulating materials and jackets; joint fillers, sealers and packing; plumbing tape; washers.
19 Non-metallic rigid pipes for building, plumbing, guttering and drainage; panels and doors for bath and shower cubicles; non-metallic flashing; plastic manholes and covers; parts and fittings for all the aforesaid goods.
20 Plastic drain traps; valves; bathroom fittings; wall mirrors; towel dispensers; shelves; pipe clips; washstands; tanks.
21 Soap boxes, dishes and dispensers; bathroom accessories; toilet brushes and holders; towel rails, towel rings, towel holders; paper towel dispensers; toilet roll holders; wash tubs; earthenware for bathrooms.
37 Construction, installation, and repair services in the fields of plumbing, air conditioning, drying, ventilating, and central heating.