This bright blue 1500mm (5 foot) LED T8 tube sleeve accessory is a great solution to alter the light in your space for upcoming events parties and gatherings. The bright blue colour is based on the Rosco colour code of 141 making it possible to match up to existing sleeves if needed. The diameter of the sleeve is 32mm which is compatible with most brands of LED tubes (please check before ordering). It is simple and straight forward to install first remove your current LED T8 tube slide the transparent sleeve and coloured insert over and then reinstall the LED tube. Please note that this product does not have or require end caps and is only compatible with LED tubes (not for use with T8 or T12 fluorescent lights).