Philips CorePro LED GLS bulb A60 13W = 100W with B22 Bayonet base, in warm white 2700K, offers a welcoming warm atmosphere, and although non-dimmable, its unique design radiates warm light in all directions, making it a true alternative to the incandescent lamp. CorePro LEDbulb is ideal for general lighting applications and particularly suited to areas such as lobbies, corridors, stairwells, where the light is on for long periods. The A60 13W is compatible with existing fixtures which have a B22 bayonet holder, and is designed as a retrofit replacement for 100W incandescent bulbs.