A1 class/ANSI coded lamps 12 Volt 50 Watt GU5.3 base Filament Axial Lamp diameter 50mm max, overall length 46mm max Colour Temperature 3000K Life 4000 hours Other references Philips 14619, ANSI EXZ, Draeger 2M30084, Transport incubator TI 5400, Osram 46870FL24degree, Osram 46870FL, Osram Decostar 51 Titan.