These louvres can be fitted to any Titan pergola in order to provide additional light to the sheltered area beneath. It can be fitted in place of any of the standard louvres. We would recommend fitting one in the centre of the pergola or for larger pergolas or those that require more light, three with one at each edge and one in the middle.The light strip in the louvre is solar powered by a panel located on the louvre itself. The light can be turned on and off with an included remote and the brighness level can also be adjusted.