Sterilume-EX lamps can be used in older style S5Q-PA, S5Q-PA/2, S5Q, S5Q/2, S5Q-GOLD, S5Q-GOLD Sterilight systems * Sterilight S2RL UV lamps have a full one-year warranty and have been tested in order to deliver a specific UV intensity in each system that is offered * For 6 gallon per minute units * This genuine S463RL Sterilight UV lamp can easily be identified by the green bulb base