MASTER PL-L 4-Pin dimmable CFL Lamp, designed for general lighting in shop, office, hotel and specific task lighting, as well as outdoor in residential area and park. The MASTER PL-L is an energy saving compact fluorescent lamp. Envelope consists of 2 parallel fluorescent tubes. Optimal light performance for short or long operation per switch on. Long life and sustainable light output. 4-Pin base without starter and capacitor. Lamp characteristics are influenced by operating conditions and control gear used. Lamp performance is governed by temperature of the coolest spot.