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The NDS 312BCS is a 10-inch round sewer cleanout box designed for professional-grade underground access to sewer and drain cleanout points. Built for use in residential and light commercial plumbing applications, this green-lid box provides a durable surface-level access point that allows plumbers and drain technicians to reach buried cleanout fittings without excavation. The round profile fits standard cleanout installations, and the professional green color follows common utility marking conventions for sewer and wastewater systems. Weighing 4.07 pounds, it is manageable for single-technician installation in most soil conditions.
This cleanout box is suited for new construction and retrofit plumbing projects where a protected, accessible cleanout port is required at grade level. Typical installations include residential drain systems, commercial site drainage, and municipal-adjacent service laterals where inspections, snaking, or hydro-jetting access is needed. The box is set into the ground over an existing cleanout riser and brought to finish grade to allow tooled access without disturbing surrounding landscaping or hardscape.
Designed as an OEM-style replacement and standard-fit cleanout box for residential and light commercial sewer cleanout riser applications requiring a 10-inch round surface box.
Installation is typically performed by a licensed plumber in accordance with local plumbing codes and IPC requirements. Shut off any active flow or pressure in the line before servicing the cleanout fitting below. Excavate to the appropriate depth so the box lid sits flush with finish grade, then backfill and compact around the body to prevent settling. Do not overtighten any cap or plug on the cleanout fitting below, as this can crack plastic riser components.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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