Sylvania 21115 DULUX 26W double compact fluorescent lamp with 2-pin base, 4100K color temperature, 82 CRI, ECOLOGIC for use on magnetic ballast. SYLVANIA DULUX D ECOLOGIC lamps are long-life, energy-saving alternatives for incandescent lamps. When paired with SYLVANIA ECOLOGIC linear fluorescent lamps, all the fluorescent lamps in an installation will be TCLP compliant.