The Hi-Tech Lamps part number CF23PAR38/2700-U is a 23 watt (23W) PAR 38 compact fluorescent lamp made by Ushio. This lamp has maximum overall length of 127mm and a diameter of 122mm The average lifetime is 10000 hours with a much longer typical lifetime in commercial environments. This lamp has a warm white color temperature of 2700 Kelvin (2700K), and has an output of approximately 1050 lumens (1050 lm). This lamp is also known as Ushio CF23PAR38/2700/E26 and 3000559. This 23W CFL is an ENERGY STAR?? Qualified Product.