This fluorescent tube is a non-standard length, non-standard colour temperature for an 18W T5 tube light bulb which is used primarily for under cabinet kitchen lighting. The tube is approximately 585mm excluding the pins, 600mm including the pins. Also fully compatible with the 3700K or 3200K tubes of the same length - these are just slightly different colours.Fitted with standard G5 2-pin (5mm apart) caps to both ends. Need more help in choosing a suitable fluorescent tube? Read our guide Choosing Flourescent Tubes and our guide to Flourescent Starters.