ULTim8® High Efficiency ballasts deliver up to 8% additional energy savings over standard electronic ballast and even more when used with the new F32T8/ES (30 Watt) or F28T8 (28 Watt) lamps. Universal Lighting's ULTim8 high efficiency ballast family provides maximum energy savings for T8 lighting systems. With ULTim8, you can document exceptional energy savings on all your retrofit jobs!