T8 to T5 Converter:

T8 to T5 adapter is for updating conventional T8, T10, and T12 fluorescent lamp to latest energy saving T5 standard lamp. T5 adapter saves both energy and installation costs. T5 consumes 40%-60% than the traditional T8, T10 and T12 tubes.
It Generate more brightness than T8, moreover, with the electronic ballast in the adapter, the replacement will give more than 40% energy saved. And it's installable on existing T8/10/12 lamp frame; the installation is the same way as replacement of a burnt tube. All you need to do is to take down the old tube and take away the starter then replace with T5 converter.