High-pressure sodium vapor lamps for open and closed light fittings. Product properties: Service life (maintenance cycle): 3 years (at approx. 11 h/day). Product advantages: High luminous efficacy. Application areas: Roads. Outdoor lighting. Industrial plants. Suitable for closed and open light fittings. Outdoor applications only in suitable light fittings. Safety instructions: Disconnect mains power before installation. Operation with defective outer bulb not permitted.Lamp power: 1000W, Luminous flux: 130000lm, Base: E40, Lamp shape: Tube, single-ended, Color Rendering Index CRI: 20-39, Color temperature: 2000K, Lamp luminous efficacy: 130lm/W, External igniter required: Yes, External control gear required: Yes, Overall length: 352.00mm, Diameter: 66.00mm, Plant lighting: No, Design: clear, Replacement for mercury vapor lamp: No, Weighted energy consumption in 1.000 hours: 1003.00kWh, Average rated service life: 20000h, Lamp designation: T21EAN/GTIN: 4050300251417