Spectra Brite Full Spectrum fluourescent bulbs are Enviro-Lume certified and offer crisp white light with a fresh outdoor feeling. The balanced white light provides more accurate color rendition, reduced eyestrain, and less glare. With life ratings up to 44,000 hours, these full spectrum light bulbs are the preferred choice of energy and color conscious clients throughout North America. Replace 4 standard fluorescents with just 2 Spectra Brite bulbs to reduce watts per fixture while still enjoying brighter light output for tremendous energy savings!