The KTC LED Filament GLS lamp ha s a traditional appearance and gives an even spread of light in all directions. It is also highly functional and efficient , up to 100lm/W, giving a quality of light that creates inviting living spaces while offering huge energy savings over filament lamps without compromising on brightn ess . The lamps can quickly replace filament products in domestic and hospitality lighting applications, and once in place rapid payback is achieved. Save energy up to 90% compared with a n incandescent filament lamp. High lumen output, up to 100lm/W. Long life of 20,000h. Instant start. Negligible UV output. Mercury free. Line Frequency: 50-60Hz Ambient temperature: -20° C to 40° C Dimension: Length: 105mm x Diameter: 60mm Safety and Maintenance: Switch off supply before installing or removing lamp. Allow to cool before handling. Do not use in totally enclosed fittings as this will reduce lamp life. Do not dispose of in household waste. Dispose of in appropriate section of local civic amenity site or recycling centre.