Industrial Lighting Solutions Viqua Sterilight Compatible S463RL UV Lamp for 5 & 6 Gallon Per Minute S5Q-PA, S5Q, S5Q-Gold Bulb - 1 Year Warranty! Effective Hours Rating: 10000hrs - Ultraviolet Germicidal Light Bulb Cross Reference: S5Q-PA, S5QPA, S5Q-PA/2, S5QPA/2, S5QPA-2, S5Q, S5Q/2, S5Q-2, S5Q-GOLD, S5Q-GOLD, 05-0510 Part Number: S463RL Alt. Part Number: EV311253 Bulb Type: T5 Style Quartz Glass Highest Quality Comatible Replacement for less than a Third of the Cost! One Year Warranty!