The Hi-Tech Lamps part number CF13DE/841-U is a 13 watt (13W) double tube compact fluorescent lamp made by Ushio. It has a maximum overall length of 131mm with a G24q-1 four pin CFL base. The average lifetime is 10000 hours, it has a color temperature of 4100 Kelvin (4100K), with a nominal luminous flux of 900 lumens (900 lm). It is intended for operation using a dimming electronic ballast. This lamp is also known as Ushio CF13DE/841 and 3000160.