GROCO 1-Inch Bronze Access-Door Round Hull Strainer

The GROCO RSC-1000 hull strainer protects a thru-hull intake from larger debris before that material reaches the plumbing inside the boat. Its round exterior body covers the intake opening while still allowing water to reach the thru-hull. The access door gives the owner a practical way to reach the underlying fitting when inspection or cleaning is needed. This configuration is intended for systems where forced flow is not needed or wanted, making it suitable for intake systems matched to that flow behavior.

GROCO casts the RSC-1000 body and door from marine bronze and uses cast filter holes to screen the incoming water. The strainer is shaped to sit on the outside of the hull, so the mounting surface and orientation should be planned before holes are drilled. The accessible door also makes it easier to inspect the intake face during haul-out maintenance. By keeping sticks, weeds, and larger debris away from the thru-hull entrance, the strainer can reduce the amount of material that reaches downstream baskets and pumps.

• Round hull-side intake protection
• Cast filter holes
• Access door for service access
• Bronze body and access section for marine use

Position the RSC-1000 so it fully covers the intended thru-hull without interfering with nearby fittings or hull features. Use marine bedding and fasteners appropriate to the hull construction, and make sure the access section can still open after installation. During haul-outs, clean marine growth and packed debris from the openings so the connected intake can receive normal flow. For other thru-hulls, strainers, and drain hardware, browse Thru-Hulls & Drains.