Sterilight UV Quartz Sleeve For The S2Q-PA (QS-330) Genuine VIQUA Sterilight QS-330 Quartz Sleeve Compatible with VIQUA Sterilight R-Can VT4, VTV/2, S2Q-PA, S2Q-PA/2, S2Q, S2Q/2, S2Q-GOLD, S2Q-GOLD/2, SSM-17, SSM-17/2 UV Systems Viqua Sterilight Replaces the Brands R-Can and Sterilume Factory Replacement for Guaranteed Performance and Safety