Sylvania 400w HSI THX GES 4200k 0020544
Sylvania 400w HSI-THX GES 4200k. These lamps are used for applications such as, petrol stations, car parks, rail yards and sport arena lighting. This lamp is more commonly known as a HQI-T type lamp and can be used in any 400w metal halide E40 type fitting. Average life of 15,000hrs Packed in 12's
