With a Rosco colour code of 165 this Daylight blue shade is a sleeve accessory that offers an economic way to change the light output of your existing 4 foot LED tube. To install this product remove your existing LED tube slide the clear tube and coloured insert over and then put the LED tube back up again. This economic solution saves money vs more dedicated RGB / Colour changing lighting fittings and requires little to no maintenance. It has been designed to fit 32mm diameter LED T8 tubes which generally will be suitable for most brands however please check your tubes are compatible before ordering. Please note that this item does not need end caps and is no suitable for T8 or T12 fluorescent tubes.