Description Feature: Direct fluorescent replacement! Delivers more lumens in step with watt, less heat radiation The milky plastic cover supports to dissipate light and upgrade appearance Our LED tube lighting fixtures appearance exactly the same as fluorescent tubes when became on but use 1/2 the flexibility The clear-cut plug-and-play feature of a ballast well matched LED tube makes them the best alternative to fluorescent tube lights. Dimmable or not: No Start time: < 0 S Working Temperature: -20~65 centigrade Life Span: 50000+ Hours Certificate: CE, ROHS approval