ROBERTSON 3P10041 Individual Fluorescent mBallast, 1 FC6T9 or FC8T9 Circline Lamp, Preheat Start, 120Vac, 60Hz, Normal Ballast Factor, NPF, Model SSN2PWS AM (Replaces Model SSN2PWS /A) Equivalent to Philips-Advance LC1420CTP, Universal 200-C-S-P, Keystone SS22WSTP, GE GEM1FC8T9RS120IP Save by ordering the Quik-Pak of 10 individually packaged ROBERTSON units 2P10041 Offering the broadest ballast/LED Driver line available on Amazon. Take advantage of Robertson's 60 years of electronic design and quality manufacturing experience. Go to RobertsonDirect.com for complete technical data.