The Hi-Tech Lamps part number CF26D/835-U is a 26 watt (26W) double tube compact fluorescent lamp made by Ushio. It has a maximum overall length of 172mm with a G24d-3 two pin CFL base. The average lifetime is 10000 hours, it has a color temperature of 3500 Kelvin (3500K), with a nominal luminous flux of 1800 lumens (1800 lm). It is intended for operation using a standard CFL ballast. This lamp is also known as Ushio CF26D/835 and 3000146.