ROBERTSON 5P20070 RSU213T5120/A Bulk-Pak of 10 Fluorescent eBallasts for 2 F13T5 Linear Lamps, 120Vac, 50-60Hz, Normal Ballast Factor, NPF Equivalent to: Keystone KTEB213-1-TP-SL Preheat Rapid Start, 2 Lamp, T5 (F13T5), NPF, 120Vac. Also available as a Quik-Pak of 10 units individually packaged as 2P20070 Also available as a single quantity as 3P20070 Go to RobertsonDirect.com for complete technical data.