Compact fluorescent PLL range from 18 to 55 watt,they have 4 pins in a row,they are a range of biaxial lamps suitable for modular ceiling lighting fixtures,they replace linear fluorescents twice the length,single ended for simpler installion.
Known as Dulux L,Dulux L Delux,Biax L,Lynx L/E.
Available in extra warm white,warm white,white,cool white,and day light in the delux version which as excellent colour rendering.
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4 pins pll