Designed to replace traditional 4 pin fluorescent lamps, used mainly in commercial spaces, these ReneSola direct fit LED PL-L lamps or 2G11 lamps as commonly known offer high level of energy & maintenance savings over fluorescent counterparts. They operate directly without the existing ballast and fit into same 4-pin sockets seamlessly with no additional wiring required. Excellent efficacy (>90lm) and wide beam angle result in bright & glare free light.