Made especially to fit a 4 foot LED T8 tube this fantastic coloured sleeve is the ideal choice for altering the light colour of your LED tube. Simply uninstall your current LED T8 slide the clear sleeve sky blue insert over it and then reinstall the tube. Once this has been completed your light will then produce a Sky Blue Rosco code 068 colour light ideal for setting the scene for gatherings events or parties. Please be aware that this sleeve accessory has been designed to fit with most brands of LED tube (must be 32mm in diameter) please check that your tube is compatible. It is also important to note that this product does not require end caps.