Suitable for indoor Yes SEG number 8330910 Sstl-Number 4931883 EEI – Energy Label B Base (standard designation) 2GX13 Recycling Yes Lamp mercury content 4.4 mg Nominal wattage 55W Construction wattage 55 Rated lamp efficacy (standard condition) 76 lm/W Rated lamp efficacy (HF data) Under clarification by authority and standardization body Operation mode LLMF/LSF HF Length 305.00 mm Tube diameter 16 mm Diameter 300 mm Length with base excl. base pins/connect 300 mm Nominal lamp life time 12000 h Lifespan 12000 h 1) Service life 8000 h 2) Rated lamp survival factor 2000 h 0.99 Rated lamp survival factor 4000 h 0.99 Rated lamp survival factor 6000 h 0.98 Rated lamp survival factor 8000 h 0.92 Rated lamp survival factor 12000 h 0.50 Rated color rendering index (Ra) >=80 Nominal luminous flux 4200 lm Rated luminous flux 4200 lm Luminous flux 4200 lm Light color 830 Rated color temperature 3000 K Color rendering index Ra 80…89 Light color as per EN 12464-1 LUMILUX Warm White Rated LLMF at 2000 h 0.85 Rated LLMF at 4000 h 0.83 Rated LLMF at 6000 h 0.82 Rated LLMF at 8000 h 0.80 Rated LLMF at 12000 h 0.75 Rated ambient temp.w.max.luminous flux 30.0 °C Designers and architects are looking for suitable alternatives to standard strip lighting. They appreciate round luminaires that will blend in perfectly with their surroundings. OSRAM has therefore taken its super bright T5 HO lamps and developed the circular LUMILUX T5 FC (FLUORESCENT CIRCLINE) in two diameters.An all-round solution whichever way you look at itThe innovative solution for all lighting designers and architects who want to get away from the restrictions of strip lighting and rectangular grid systems. The circular LUMILUX T5 FC system paves the way for unconventional high-intensity circular luminaires with many different uses for the FC 22 W, 40 W and 55 W lamp. The circular shape of the LUMILUX T5 FC fluorescent lamp enables designers to create round luminaires that emit light in all directions.Slim lamp, low-profile luminaireThe tube diameter is just 16 mm so the luminaires can be unusually shallow and compact and yet offer high levels of efficiency. Many manufacturers have taken up the idea of circular lighting with the LUMILUX T5 FC system from OSRAM and launched a wide variety of innovative luminaires with unconventional designs and optimum efficiency on the market.