Brumberg BIRO CIRCLE 13857184CA. 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 23.162 lm, Power 1 x 180 W, Light colour neutral white, Correlated color temprature (CCT) 4.000 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: 13857184CA , GTIN: 4251433968702