Downlight luminaire type D35-S280 for Ceiling surface mounting, Diameter 280mm and height 54mm, LED light source , lumen out 3076lm, LED driver type DALI: Dimming, colour temperature 4000 Kelvin, and CRI >80, reflector type OP - Opal diffuser in acrylic 4000K, optic type OP - Opal diffuser in acrylic , with Acrylic diffuser