Black Quartz Undermount Sink for a Statement Kitchen Counter

This Karran quartz undermount sink brings a matte black finish to a 60/40 double-bowl configuration, mounting beneath granite, quartz, or solid surface countertops for a clean, uninterrupted counter surface.

Key Features

• 60/40 split double bowl gives one larger basin for washing and one smaller basin for rinsing or prep without dividing the sink equally.
• Quartz composite construction in a matte black finish that holds color consistently through the material.
• Undermount installation into granite, quartz, or solid surface countertops, with no exposed rim above the counter.
• 3-1/2 inch drain openings in both bowls, sized for standard strainers and disposal flanges.
• IAPMO certified for plumbing code compliance.
• Requires a minimum 36-inch base cabinet to accommodate the 32-inch overall width.

Two Bowls, One Workflow

The 60/40 split means the larger left bowl handles the heavy lifting: soaking a sheet pan, washing a colander of produce, or holding a full rack of dishes. The smaller right bowl stays free for rinsing or keeping prep water separate. That division of labor is the reason a 60/40 configuration outsells the even split in working kitchens where the sink sees constant use. Both bowls share the same 9-inch depth, so neither side is shallow.

Matte Black in Quartz Composite

The sink is built from quartz composite, a dense engineered material that carries its color all the way through rather than as a surface coating. Matte black in this material reads as a deliberate design choice rather than a finish applied after the fact, which means the color stays consistent over time and holds up to daily kitchen use. The undermount profile keeps the counter edge unbroken, so the black sink reads as part of the stone rather than sitting on top of it.

Where This Sink Fits

This sink suits a kitchen designed around darker or high-contrast material palettes: black or graphite quartz countertops, dark granite, white marble with black fixtures, or natural wood cabinets where the sink is meant to anchor the look. Because it undermounts, it requires a hard-surface countertop such as granite, quartz, or solid surface. It is not designed for laminate or tile. The 36-inch minimum cabinet width makes it a natural fit for the primary sink run in a standard kitchen layout, and the IAPMO certification satisfies residential and light commercial plumbing code requirements.

Common Questions

A Black Undermount Sink Built for the Long Run

Choose the QU-711-BL for a quartz 60/40 double-bowl undermount sink that anchors a dark-palette kitchen and meets plumbing code out of the box.