LED surface-mount luminaire with IP50 and opal diffuser. Luminaire input power: 37.4 W, with LED converter. LED service life lasts 50,000 hours before luminous flux is reduced to 95% of the initial value. Chromaticity tolerance (initial MacAdam): 3. Luminaire luminous flux: 4,820 lm, luminaire efficacy: 129 lm/W. Colour rendering Ra > 80, colour temperature 4000 K. Integrated ESD protection of the LED module. Housing made of pre-painted, roll-formed sheet steel, white, with injection-moulded diffuser made of opal polymethylmethacrylate with impact strength: IK03. Edges sealed by high-quality foamed, water-repellent polyurethane seal; installed using slotted washers and spacer supplied with the product. Approved ambient temperature: -20°C to +25°C. Luminaire wired with halogen-free leads. Please consult your adviser if you are planning to use the luminaire in environments containing chemical pollutants or for outdoor use. Dimensions: 1520 x 120 x 91 mm; weight: 4.1 kg.