Fluorescent Lamp, High Output, F54T5/41K/8/HO/PS/G5/STD, 54 W, 2-Pin Miniature G5 Lamp Base, T5 Linear, 5000 lm, 30000 hr Average Life, 85 CRI, 4100 K Color, Program Start, Tri-Phosphor Coated, 5/8 in Dia x 46 in L, 14 deg F Minimum Starting, 60 Hz Operating Frequency, Cool White Light