Series: SIDELITE Square built-in surface luminaire with microprismatic diffuser. Housing made of sheet steel, white powder-coated . Frame made of aluminium white powder-coated. Lightguide and diffuser made of non-yellowing plastic (PMMA). Lateral light emission (RZB SIDELITE technology) for homogeneous light distribution. Lay-in luminaire for ceiling systems with visible mounting rails. Luminaire can be used with accessories (to be ordered separately) as recessed or surface mounting luminaire. DALI converter for controlling, switching and dimming. MultiLumen: Luminous flux adjustable in 4 steps. Factory preset to lowest luminous flux. External driver. Suitable for through-wiring. Simple converter installation with plug-in locking system. Operating device replaceable in accordance with ecodesign requirements. Perfect for office areas (RUG < 19) and environments with computer screens in accordance with EN 12464-1. Suitable for use in HACCP or IFS-certified companies in the food and drink industry. Colour: white Length: 622 mm Width: 622 mm Cut-out length: 610 mm Cut-out width: 610 mm Recess height: 160 mm Luminaire: recess height: 38 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI): 90 System power: 25 W Rated luminous flux: 3700 lm Beam angle Down: 88° / 85° Luminous efficiency: 148 lm/W System power 2: 28 W Rated luminous flux 2: 4150 lm Luminous efficiency 2: 148 lm/W System power 3: 31 W Rated luminous flux 3: 4550 lm Luminous efficiency 3: 147 lm/W System power 4: 35 W Rated luminous flux 4: 5000 lm Luminous efficiency 4: 143 lm/W Control gear: Converter, dimmable, DALI Protection class: II Type of protection: IP 40