Megaman CFLs are recognised for outstanding quality and performance, achieved through the use of premium quality materials, innovative technologies and stringent control measures. Megaman’s CLUSTERLITE offers impressive lumen output, making it the perfect substitute for metal halide lamps. Pictured here at the Land Rover dealership in Newport Pagnell. Features: Manufacturer DESC.: LH0127 Lumens Per Watt: 103 27W 4000K Cool White lamp with 50000 hour average lamp life Instant restart capability with rapid start-up time achieved within 120 seconds. Engineered with patented cooling-tube to guarantee over 76% lumen maintenance throughout lamp life. Effective operation in temperature range from -40°C to +80°C. Optimum operating position is base up. Cluster-type lamp tube design allows continuous illumination upon partial failure of lamp tubes. Dimensions  Length: 188mm  x  Diameter: 63mm