(10pcs) F13T5/CW 13-Watt T5 Fluorescent 21" Cool White 4100K Light Bulbs, (Pack of 6) F13T5/CW Cool White 21" Straight T5 Fluorescent Tube 20,000 Life Hours, G5 Mini Bi-Pin Base Ultra Bright Color 4100K, Cool White 750 Lumens, CRI: 85