ROBERTSON 3P20040 RSU135T5120 /A eBallast, Preheat Rapid Start, 1 Lamp, T5 (F35T5), NPF, 120Vac. Equivalent to: Philips-Advance ICN2S28, Osram-Sylvania QT2X28120PS, QT2X28277PS, QTP2X28T5120PSNE Equivalent to: Universal B228PUNV-C, Keystone KTEB135HE-1-TP, GE GE228MVPSA, Fulham WH2120L Save 29% and order the Quik-Pak of 10 individually packaged ROBERTSON units: 2P20040 RSU135T5120 /A Two Year Factory Warranty-ONLY if the Amazon Seller is ROBERTSON WORLDWIDE. Take advantage of ROBERTSON's 60 years of electronic design and quality manufacturing experience