250W Sylvania HSL BW Standard Mercury MBF U250 Watt 4000K CCT29,000 hours lifeUniversal burning positionE40 GES cap, 13,000 lumens
250W GE Kolorlux MBF U Standard Mercury MBF-U250 Watt 4000K CCT20,000 hours lifeUniversal burning positionE40 GES cap, 13,000 lumens