This 9 watt Satco S29860 LED vertical PL lamp - 4-pin is compatible with electronic instant, rapid and programmed start ballasts. Its G24Q base and 82 CRI provide 1100 lumens and 4000 Kelvin of light, making it a suitable replacement for 18W/26W/32W/42W 4-pin PL fluorescent bulbs. It also has a 120 beam angle and an average lifespan of 50000 hours. Plus, it can be operated in a vertical position and is suitable for damp locations. This product is DLC approved and manufactured with quality in mind.