GE Starcoat T5 HO 24 Watt 2 ft 6500K (40/Cs) $0.00 Default Title - $0.00 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. Use only these High Output (HO) lamps in fluorescent T5 fixtures. Lamps that are not marked HO will have significantly less output. Choose from the 6,500°K the blue spectrum or the 3,000°K the red spectrum.