Sylvania Lumalux S62 70W LU70/ECO (67512) High Pressure Sodium lamps are intended primarily for use in enclosed luminaires. Initial Lumens 6,300, Mean Lumens 5,500, Rated Average Life 24,000 Hours based on 10 hours per start, ANSI Ballast Type S62. These Sylvania Lumalux HPS lamps employ a Mogul Base and are designed with an ET23.5 bulb.