STERILIGHT-QS-012- Replacement UV Quartz Sleeve 12-100 GPM for S12Q-PA, S12Q and S12Q Model No. of Quartz Sleeve: QS-012 Fits models S12Q-PA, S12Q, S12Q-GOLD, S24Q, S24Q-GOLD, S40Q, SUV 24P-100P, SSM-39; 12-100 gpm units; 20 x 22 x 889 mm (open Used in the Silver, Silver Plus, Gold and SUV series with S36RL/S8RL and S8RL-4P lamps.