Circular 22W T5 Fluorescent Tube - Warm White

type light fittings - Warm White Warm White colour for a warm lighting effect (3000K). 40% brighter than a standard circular fluorescent tube. Lifetime of 12, 000 hrs, so it will last up to 4 years if used 8 hours per night under normal operating conditions. An even longer lifetime can be achieved by using electronic starter