57PLT8304PINTOP is a MASTER PL-T TOP 4-Pin dimmable CFL Lamp, designed for general or supplementary lighting in professional and semi-professional environment, ideal for use in recessed or surface mounted downlight, wall unit, outdoor lighting. First choice for short switching cycles, emergency lighting and deep dimming. The MASTER PL-T TOP is an energy saving compact fluorescent lamp. Envelope consists of 6 parallel narrow fluorescent tubes. Amalgam controlled operation. Optimal lighting performance for long period of continuous operation. Substantially higher light output (+30%) per light point than conventional solution. High temperature independency at higher application temperature. Long life and sustainable light output. 4-Pin base without glow switch starter and capacitor. Hot restrike – moderate light run up after cooling down at low temperature. Optimized lighting performance over a broad temperature range due to Philips amalgam technology.