Aqua-Pure Systems UVLB-1X Compatible Germicidal UV-C Bulb
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UV Lamps replaces American Water Service PT20, Aqua-Pure Systems UVLB-1X, ATS (Aqua Treatment Service) EV20E, ATS-4-810, Biolite BIO12, UVLB-1X, Cuno APUV-12, UVLB-1X, Glasco GS4305L, Ideal Horizons 42012, 42012, Master Water HIMSV-20, Neptune (Water Treatment & Accessories), Tri-20, WTA4-810, 5020, 5000, 5030, Purtest PT20, Wedeco 42012, GPH810T5L/4.