Large Shower and Drain Sump Pump System

Attwood's shower sump systems deliver the performance you've been asking for. Choose from three sizes - Standard Box with 400+ gph, Standard Box with 650 gph, or Large Box for reduced cycle time with 650 gph output. Offering fast water flow into sump and quick installation. The new lid includes a gasket to seal the sump box against overflow. The sump box even includes an air vent to prevent air locks.