ROBERTSON 1P20157 OEM-Pak of 20 Fluorescent eBallast, 2 CFQ26W/G24q CFL Lamp, Program Start, 120-277Vac, 50-60Hz, Normal Ballast Factor, HPF, Model PSM226CQMVWCE ST (Replaces Model PSM226CQMVWCE /S) Equivalent to Keystone KTEB-226T-UV-TP-PSD-NL, General Electric GEC226MVPS-BES, Fulham RH3-UNV-226-C Selections to match any lighting application. Take advantage of Robertson's 60 years of electronic design and quality manufacturing experience. Go to RobertsonDirect.com for complete technical data. Offering the broadest ballast/LED Driver line available on Amazon.