A Concrete-Finish Quartz Undermount Sink for the Modern Kitchen

This Karran double-bowl kitchen sink pairs an unfinished-concrete color with a dense quartz-composite body, designed to undermount beneath granite, quartz, or solid surface countertops where an industrial-leaning palette sets the tone.

Key Features

• 60/40 double-bowl configuration with a deeper, larger left bowl for soaking and a shallower right bowl for rinsing or prep.
• Concrete color in quartz composite made from natural quartz and acrylic resin for a matte, stone-like surface that reads as raw concrete.
• Undermount installation designed for granite, quartz, and solid surface countertops.
• Requires a 36-inch minimum cabinet width to fit the 32-inch-wide footprint.
• 3-1/2 inch drain openings in each bowl.
• cUPC and IAPMO certified for plumbing code compliance in the US and Canada.

Two Bowls, Two Depths, One Workflow

The 60/40 split gives the larger left bowl more room for a full pot or a stack of dishes, while the right bowl handles rinsing, draining, or secondary prep without pulling the main basin off task. The left bowl runs 10 inches deep, which is enough depth to keep splashing under control when filling tall cookware. The shallower right bowl sits at 7-1/2 inches, a more comfortable reach for quick rinsing. That depth difference is the practical reason to choose a 60/40 over an equal split, and it is built into the dimensions here.

The Concrete Finish in Quartz Composite

Concrete as a finish has become a kitchen design choice rather than an industrial afterthought, and quartz composite delivers the look without the porosity or maintenance that raw concrete requires. The sink body is natural quartz blended with acrylic resin, a dense composite that holds the matte, flat gray color evenly through the material rather than as a surface coating. It resists staining and keeps food residue from bonding to the bowl, which matters in a sink that reads light enough to show marks. The surface does not need sealing.

Where This Sink Fits the Design

This sink suits kitchens where the palette runs toward matte, dark, or industrial materials: matte black fixtures, exposed-aggregate or quartz countertops in cool grays, flat-front cabinet doors, and minimal hardware. It fits naturally into a kitchen remodel or new build where the concrete-and-quartz look is intentional rather than a compromise. Because it is undermount only, it belongs in a new countertop fabrication rather than a retrofit into an existing cutout. The countertop fabricator should confirm the cutout and undermount support to the 32 by 21-inch footprint before installation.

Common Questions

Built for the Kitchen That Leans Industrial

When the design intent is matte, concrete-toned, and modern, this Karran undermount sink brings the right palette and a practical 60/40 split to a kitchen countertop that can hold it.