LED–Panel 620 x 620 mm Opal, Square. Recessed luminaire for ceilings with visible mounting rails. Ceiling cut-out L x W 620 x 620 mm, Installation depth 12 mm, Length 620 mm, Width 620 mm, Weight 2,940 kg, with rotattionssymmetrical, deep, wide distributed light intensity. optimal light distribution due to a plastic, opal cover. Luminous flux 3.359 lm, Power 1 x 39 W, System Efficiency 86 lm/W, Light colour warm white, Correlated color temprature (CCT) 3.000 K, Colour rendering index CRI > 80, Rated life time L80/B10 at 25 °C: 25.000 h, Rated life time L80/B20 at 25 °C: 28.000 h, Rated life time L80/B50 at 25 °C: >30.000 h, Housing material: Aluminium / Polycarbonate, Colour: White, Permissible ambient temperature (ta): -20 °C - +25 °C, Protection class (EN 61140): II, Degree of protection (DIN EN 60529): IP40. With electronic driver, on/off switchable.