A stylish high efficiency, low profile, recessed, LED luminaire range with a choice of lens, which all meet the UGR and luminance limits recommended by BS-EN 12464, CIBSE LG7 and the BCO. MP/PC optic is Tp(a) rated. Specific ceiling system versions; ALX-RT: Exposed T bar. ALX1-R: SAS system 120 at special request. ALX2-R: SAS system 130. ALX3-R: SAS system 150. ALX4-R: SAS system 330 at special request