Philips is known for its quality lighting. This also applies to the Philips PL-Q CFL bulb. The Philips PL-Q CFl bulb has a square shape, can be placed in ceilings with narrow installation heights and spreads an even light. The average energy saving light bulb can save up to 80% energy to emit the same light as the traditional incandescent bulb. With the Philips PL-Q CFL bulb you are therefore ensured that you will see a direct difference in your energy costs! Philips PL-Q CFL bulbs with a 2-pin base are designed for use with conventional ballasts. Meanwhile, Philips PL-Q CFL bulbs with a 4-pin base are designed for use with electronic ballasts.