An easy to install 3 foot LED tube sleeve designed to adjust the output of your current T8 LED tube. Once installed this product will allow your light to output a steel green colour light which is rated as colour 728 with Roscos colour scale. To install this sleeve you must remove your LED tube and slide over the clear sleeve included with this item. Once the clear sleeve is installed the steel green coloured insert can then be slide in between it and the tube to hold it in place. It has been designed to fit up to 32mm diameter LED tubes which is suitable for the majority of brands (please check to ensure that yours are compatible). Please note that this product does not include or require end caps and is not suitable for T12 or T8 fluorescent tubes. LED tubes only.