This is a 1x36w 4ft T8 Fluorescent Batten Fitting to be used with 1 x 4ft 36w Fluorescent Tubes with the choice of colours from 2700k (Extra Warm White) to 6500k (Daylight) available from the drop-down box. Constructed from a steel with a powder-coated finish, perfect for use within applications such as commercial, offices and even domestic use. It comes complete with a high frequency ballast built into the body (pre-wired). This T8 fluorescent lamp (T26/T25) has an average life of 15,000 hours, which means it will last for many years without needing to be changed and has an A class energy efficiency rating. Dimensions of the batten: 1228mm (L) x 74mm (W) x 62mm (D). F36w - T8 Triphosphor Fluorescent Tube 4ft 36W