The T4 fluorescent tube is a popular lighting solution that is perfectly suited to recessed and space limiting applications such as under cupboard or pelmet lighting, edge lighting, retail displays and bathroom cabinets to name but a few possibilities. These lamps are a robust, reliable and well-constructed light source that offers good lumen efficacy and colour rendering properties, all at a very reasonable and affordable cost. In contrast to T5 and T8 tube the dimensions of T4 lamps are not standardized. Please check the dimensions before ordering.