19 Building and construction materials and elements, not of metal; doors, gates, windows and window coverings, not of metal; structures and transportable buildings, not of metal; structures and transportable buildings, not of metal including balcony glazing, partitions not of metal, verandas and conservatories or other extensions, folding systems and/or sliding systems, facades, partitions, panel elements, sliding walls, parallel sliding and tilting doors, projecting balconies with and without incorporated folding window systems, balcony roofing, entrances for shops, houses and flats, and for conservatories; rafters, connections for eaves, corner supports, wall connections, all of the aforesaid goods not of metal; parts and accessories for all the aforesaid goods, included in this class