GE High Output Rapid Start Recessed Double Contact Daylight Recessed Double Contact (T12) Fluorescent Light Bulb (24-Pack) in the Tube Light Bulbs department at Lowes.com
GE F30T12 Chroma 50 fluorescent light bulbs 866-637-1530
T8 26mm Fluorescent Tube - Top Brands Sylvania Osram GE - Rare Lengths | eBay