Attwood's shower sump systems deliver the performance you've been asking for. Choose from Standard Box or Large Box. 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.
Standard Box, 500 GPH, 10-1/2"L x 8-1/8"W x 4-1/2"H - Attwood
Large Box, 750 GPH, 13"L x 7-23/64"W x 4-7/16"H - Attwood
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Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.