A premium ceiling-recessed troffer luminaire with low glare (UGR 19) and an unusual, registered design. A square, thermoformed, multi-layer PMMA diffuser with rounded corners has glare-reducing microprisms, whereas the opalized layer evenly diffuses light over the entire surface of the room. The spring-lamella system simplifies assembly. A concave or convex diffuser. DYNAWHITE and CIRCADIAN versions as well as versions for installation in 625x625 mm ceilings are available. Luminaire type: Troffers; Mounting type: recessed mounting; Mounting location: ceiling; Luminous flux: 4100lm; Luminous efficacy: 89lm/W; Correlated color temperature: 3000K, 4000K ; Color rendering index (CRI): >80; Median useful life: L70B50 - 176000 h,L80B50 - 111000 h,L90B50 - 53000 h; Luminous intensity distribution direction: direct; Frame color: white, smooth matte, RAL9016; Luminous intensity distribution: wide; Luminous intensity distribution geometry: symmetrical; Unified glare rating (UGR): 16 - 17; Angle 65° luminance: 1915, 2148; Voltage: 230V AC; Power: 46W; Wired lighting control: ON/OFF, DALI; Wireless lighting control: Optional Bluetooth Mesh; IP Code: IP40; IEC protection class: II; Diffuser material: PMMA; Diffuser type: microprismatic; Optics: Convex diffuser, Concave diffuser; Housing material: steel sheet; Luminaire shape: square; Permissible ambient temperature range: from 0°C to 25°C; Connector type: 3-pole, 5-pole; Dimensions: Height: 53mm, 74mm, Width: 597mm, 622mm, Length: 597mm, 622mm, ; Ceiling opening dimensions: 575mm x 575mm; Weight: 5.00kg - 5.60kg; Registered design: Yes, No;