Fluorescent Lamp, F28T5/35K/8/PS/G5/STD, 28 W, 2-Pin Miniature G5 Lamp Base, T5 Linear, 2900 lm, 30000 hr Average Life, 85 CRI, 3500 K Color, Program Start, White/Tri-Phosphor Coated, 5/8 in Dia x 46 in L, 14 deg F Minimum Starting, 60 Hz Operating Frequency, 104 lm/W Efficacy