Rated life 15,000 hours. A Megaman quality product. Dia. 50mm. 11W = 50W GLS light output. Energy Rating ‘A’. Megaman Ingenium technology features 600,000 switching cycles and shorter preheating time. 11w Energy saving £14.24 Year. Reduced CO2 (kg/year) 61. The 14w is not suitable for use in fire rated fittings