ROBERTSON 3P20091 RSZ128T5120 /A eBallast, Preheat Rapid Start, 1 Lamp, T5 (F28T5) and CFL (CFQ18W/G24q), NPF, 120Vac. Equivalent to: Philips-Advance ICN2S28N,Keystone KTEB-128-1-TP-FC,Osram-Sylvania QTP2X28T5UNVPSN Equivalent to: General Electric GE228MVPSA, Hatch HL228HE/PS/UV/S Save 44% and order the Quik-Pak of 10 individually packaged ROBERTSON units: 2P20091 RSZ128T5120 /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