The Integral LED Max Efficiency GLS range achieves Class B energy rating with 187 lm/W, enabling savings of up to 60% on energy usage compared to other LED lamps. This 4.3W retro-fit Integral LED Max Efficiency GLS delivers a warm light output equivalent to 60W, offering big energy savings over equivalent incandescent bulbs. With a 806 lumen output and frosted finish this lamp is ideal for rooms with a single pendant fitting, living rooms, hallways and kitchens.