You are purchasing one unit of the Viqua, Sterilight S463RL Compatible UV Lamp for 5 & 6 GPM S5Q-PA, S5Q, S5Q-GOLD Bulb. Part Number: S463RL. PART NUMBER: S5Q-PA, S5QPA, S5Q-PA/2, S5QPA/2, S5QPA-2, S5Q, S5Q/2, S5Q-2, S5Q-GOLD, S5Q-GOLD, 05-0510.
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