The SEAFLO 17A Series Shower Drain Box is a complete automatic wastewater drainage system designed for marine, RV, boat, camper, and off-grid plumbing applications. Built around a powerful 1200 GPH 12V pump, this shower drain box quickly removes gray water from showers, sinks, galleys, wet bars, and other onboard or mobile drainage sources. Designed for hands-free operation, the system uses an automatic water level sensing bilge pump that activates when water collects inside the box. Multiple inlet ports allow several drainage lines to feed into one compact unit, while the removable debris filter helps protect the pump from hair, soap residue, and common drain debris for easier maintenance and longer service life. The rugged impact-resistant box is built with gaskets to help prevent splashing, and the integrated check valve helps stop wastewater from flowing back into the tank. With a compact footprint, rear foot mount, and flexible outlet sizing, the SEAFLO 17A Series Shower Drain Box is a reliable choice for clean, organized wastewater removal in tight marine and RV installations.