This Deep Amber coloured sleeve cover has been cut especially to fit with 5 foot (1500mm) long 32mm diameter T8 LED tubes. It will adjust the colour of the light output and is straightforward to install by sliding the transparent sleeve and coloured insert over your existing LED T8 tube. The deep amber shade is Rosco colour code 104 making it possible to match up to existing shades. Please be aware that this product comes in two necessary parts the first as a clear tube and the second a deep amber coloured insert it requires both together in order to function.