ROBERTSON 3P20032 RSO142TR120 /A eBallast, Preheat Rapid Start, 1 Lamp, T8 (F40T8) or CFL (CFQ42W/GX24q), NPF, 120Vac. Equivalent to: Hatch HC142/RS12/W, Keystone KTEB-142T-1-TP-SC /H Preheat rapid start electronic ballast, End-of-Lamp Life protection, Internal surge protection Save and order the 2P20032 Quik-Pak of 10 units individually packaged Save the most with the 5P20032 carton of 10 units, not individually packaged Go to RobertsonDirect.com for complete technical data.