ZOELLER 508-0019 Sump/Battery Back-Up System, Pump HP 1/2
Sump/Battery Back-Up System, Pump HP 1/2. These back-up combination sump pump systems come with a battery-powered, back-up pump and a primary pump all contained in one unit. They automatically activate a back-up sump pump when the primary sump pump malfunctions or when the main electrical power supply fails....
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