This sleeve cover has been designed to fit 4 foot long 32mm diameter LED T8 tubes. It will alter the light output to a beautiful Jade Green colour which is Rosco code 323. It is easy and straight forward to install you just need to take out your existing LED tube slide over the sleeve with the coloured insert and reinstall your 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.