ROBERTSON 3M10054 HP2627P /F Fluorescent mBallast for 1 CFQ26W/G24d, CFTR26W/GX24d CFL Lamp, Preheat Start, 277Vac, 60Hz, Normal Ballast Factor, HPF Save 17% over the individually packed version by ordering our Quik-Pak of 10 ea. Individually packaged units: 2M10054 HP2627P /F 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