You are looking at the twin Excel 4ft 55w led batten fitting by NVC. This fitting comes in 4000k (cool white) with a high lumen output of 5920 (107.6 lumens per watt). The input voltage is 220-240v and power factor is >0.9 meaning this will allow easy and safe installation in the UK. The super sleek design replicates a traditional fluorescent batten fitting and this particular unit replaces a twin 36w T8 fluorescent. The average life is 30,000 hours which gives you around double the average of a traditional 4ft fluorescent fitting. Additional specifications: Partcode - BR55LED-840 Beam Angle - 120° CRI - >80 Protection Rating - IP20 Dimmable - NO Dimensions - L1227mm x H64mm x D61mm Warranty - 5 Years