The Sylvania T5 FHO Luxline Plus are fluorescent lamps of 16mm of diameter that combine light efficiency and low power consumption. The luminous flux is excellent all along their lifetime. Each fluorescent lamp has G5 type of socket. The Sylvania T5 FHO 24W/840 Cool White Deluxe have size of 549mm. with a color temperature of 4000k, they spread a cool white light. The range has class A energy etiquette so they are energy efficient. Their life is very lengthy, 24000 hours on average.