Spectra Brite fluorescent lamps are Enviro-Lume certified and offer superior crisp white light with a fresh outdoor feeling. The balanced white light provides more accurate color rendition, reduced eyestrain, and less glare. Extended life phosphors keep Spectra Brite lamps brighter longer, and the 5 year average lifespan is up to 5 times longer than standard lamps. Replace 4 standard fluorescents with just 2 Spectra Brite lamps to reduce watts per fixture while still enjoying brighter light output for tremendous energy savings!