Sunlite 42 Watt High Wattage Spiral, Medium Base, Daylight B provides a light output of

provides a light output of 135 lumens at a Color Rendering Index (CRI) of 62 and can last an average of 6000 hours

and its two lamp design uses 2 18W GU24 base bulbs

Sunlite2 - PL13 Lamp

SLB11/E/27K

Also check if your fixture requires lamps that are pulse start and/or protected

Sunlite 42 Watt High Wattage Spiral, Medium Base, Daylight B provides a light output ofSunlite high wattage spiral compact fluorescent lamps give off a daylight light much like a 150 watt incandescent bub. These energy efficient CFL lamps can last up to 9. 1 years with normal household use of 3 hours a day. This energy saving 42 watt 6500K, medium base bulb offers 2800 lumens of light output and has an average rated life of 12,000 hours. 42 Watt: 2800 Lumens, 80 CRI 150 Watt incandescent equivalent 12,000 Hour Average Lamp Life 6500K