17
Plastics in extruded form for use in manufacture; Packing, stopping and insulating materials; Flexible pipes, not of metal
19
Windows and doors for residential buildings, warehouses, retail premises and factory buildings; Lattice work, Namely door and window frames and window sashes for the aforesaid windows and doors; Parts for the aforesaid windows and doors; Anti-leverage devices; Ventilation elements (components) for/on/in windows and doors, in window or door rabbets, on window or door frames or window or door casements; Ventilation elements (components) with intakes drawing air through the elements from outside a window or door to the interior of a room by means of an automatic valve, in particular a shuttle valve; The aforesaid goods not of metal; Building materials (non-metallic); Non-metallic rigid pipes for building; Non-metallic transportable buildings
37
Building construction; Repair, namely repair and retrofitting of windows and doors; Retrofitting of windows and doors with ventilation elements arranged in the window or door rabbets or on the window or door frames or casements, in particular with intakes drawing air through the elements from outside a window or door to the interior of a room by means of an automatic valve, in particular a shuttle valve