This sleeve accessory has been designed to fit 900mm (3ft) long 32mm diameter LED T8 tubes. It will change the light output to a beautiful Jade Green colour which has a Rosco code of 323. It is simple to install you just need to take out your existing LED tube slide over the sleeve with coloured insert and reinstall the LED tube. Ideal for changing the atmosphere of a space without the high cost of expensive colour changing fittings or electrician fees. Please note that this product has been designed for LED T8 tubes only and does not include end caps. It comes as a clear sleeve with a jade coloured insert.