Concrete Quartz Undermount Sink for a Tonal Kitchen Design

This Karran single-bowl undermount sink is built from quartz composite and finished in Concrete, a warm gray that blends naturally with stone countertops and current kitchen color palettes. It mounts beneath quartz, granite, or solid surface countertops for a clean, rimless installation.

Key Features

• Single-bowl basin in a Concrete finish sized at 21-3/8 inches wide by 17-7/8 inches front to back with a 9-inch interior depth.
• Quartz composite material chosen for its density and consistent color through the body of the sink.
• Undermount installation into granite, quartz, or solid surface countertops, hiding the rim below the counter surface.
• Requires a minimum 27-inch cabinet to support the sink footprint.
• 3-1/2 inch drain opening to accept a standard basket strainer or disposal flange.
• cUPC and IAPMO certified for plumbing code compliance.

One Basin, Uninterrupted Counter Surface

A single undermount bowl keeps the counter running edge to edge with no rim breaking the surface, which makes wiping debris straight into the sink fast and keeps the workspace visually open. The 9-inch interior depth gives room for large pots and sheet pans without the basin feeling shallow under daily use. This configuration works well as a primary kitchen sink in a modest-sized kitchen where splitting wash and rinse between two bowls is less important than having a single deep, clear space.

Quartz Composite in a Concrete Tone

The sink is made from quartz composite, an engineered material that carries its color uniformly through the body rather than as a surface coating. The Concrete finish reads as a textured warm gray, a tone that complements both light and dark stone countertops without competing with them. Because the color is integral to the material, chips and scratches along the bowl rim are far less visible than they would be on a coated surface. The sink ships as a kit, so it arrives with the components needed to complete the installation.

Where This Sink Fits

This is the right sink for a kitchen remodel or new build centered on a stone or engineered-stone countertop where the designer or homeowner wants the sink to sit tonally within the surface rather than contrast against it. The Concrete finish suits industrial, transitional, and Scandinavian-influenced kitchens equally well. Because it is undermount-only, it is planned into a new countertop fabrication rather than dropped into an existing cutout. Confirm the 21-3/8 by 17-7/8 inch bowl dimension and the 27-inch minimum cabinet width against your cabinet layout before ordering.

Common Questions

A Concrete-Tone Basin That Works With the Counter, Not Against It

Choose this sink when the goal is a single deep bowl that settles into the countertop tonally, holds up to daily kitchen work, and arrives certified for a standard plumbing rough-in.