Respond to these showcases www. ajplus. co. uk/ajdirect Readers may obtain information about these products by filling in the enquiry numbers on an AJ enquiry card. Advertisers wishing to promote their products on these pages should The new Troja Luminaire from Pracht has a pleasing low-profile design and is built for maximum vandal resistance. The main housing is made from extruded aluminium with die-cast aluminium end caps. The diffuser is made from polycarbonate.