extraction units for ventilation, namely, ventilation hoods, ventilating exhaust fans, ventilating fans for household use, dust and fume extraction units; extraction fans being ventilating exhaust fans; plants for sanitary purposes, namely, water desalination plants, sewage disposal plants; apparatus for sanitary purposes, namely, sanitary installations in the nature of steam rooms, urinals being sanitary fixtures, hand basins being parts of sanitary installations; individual toilets moulded ...