Series: TOLEDO FLAT+ round Flexible round recessed multifunction downlight. Housing made of sheet steel, powder-coated. Luminaire frame: aluminium, powder-coated. Light guide and diffuser made of non-yellowing PMMA, opal matt. LED backlight technology for homogeneous illumination of the entire light-emitting surface. Tunable white dynamically adjustable from 2700 K to 6500 K. Suitable for Human Centric Lighting (HCL) in combination with RZB light management systems. Suitable for Recessed ceiling mounting. Ceiling installation with spring system. Can be directly covered with thermal insulation material (applies only to the lower lumen levels). Including separate LED converter with connecting cable 250 mm. Surface mounted housing as accessory for all sizes. Colour: white Diameter: 390 mm Height: 2 mm Cut-out diameter: 377 mm Recess height: 60 mm Luminaire: recess height: 40 mm Lamp: LED Socket: without socket Colour temperature: 2700K - 6500K Colour rendering index (CRI): 80 System power: 17 W Rated luminous flux: 1950 lm Beam angle Down: 113° Luminous efficiency: 115 lm/W System power 2: 17 W Rated luminous flux 2: 2000 lm Luminous efficiency 2: 118 lm/W System power 3: 17 W Rated luminous flux 3: 2050 lm Luminous efficiency 3: 121 lm/W Control gear: Converter, dimmable, DALI Protection class: II Type of protection: IP 54