Brumberg BIRO CIRCLE 13857188CA. LED pendant ring luminaire, direct/indirect, dimmable, Round.Luminaire diameter 1800.0 mm, Hight 50.0 mm, for pendulum mounting. Pendulum length max. 5000.0 mm Weight 13.5 kg, with rotattionssymmetrical, deep, wide distributed light intensity. Cover plastic, opalLuminous flux 20.137 - 20.826 lm, Power 1 x 180 W, Light colour warm white to daylight white, Correlated color temprature (CCT) 2.700 - 6.500 K, Colour rendering index CRI > 90, Rated life time L70/B50 at 25 °C: 276.000 h, Rated life time L80/B20 at 25 °C: 183.000 h, Housing material: Aluminium / Steel / Plastic, Colour: black structure, Permissible ambient temperature (ta): -20 °C up to +25 °C, Protection class (EN 61140): I, Degree of protection (DIN EN 60529): IP20. With electronic driver, Casambi dimmable. BRUMBERG article number: 13857188CA , GTIN: 4251433968764