Karran Black Quartz Workstation Sink for a High-Contrast Kitchen Install

The Karran QUWS-880-BL is a double-bowl undermount workstation sink in black quartz, designed to mount beneath granite, quartz, or solid surface countertops in a 36-inch or wider base cabinet.

Key Features

• Black quartz composite construction with a deep, consistent matte color that holds up against daily kitchen use.
• Equal 50/50 double bowl layout with two identically sized bowls, each 9 inches deep, for separating tasks at the sink.
• Undermount installation into granite, quartz, or solid surface countertops for a clean, rimless surface.
• Workstation-ready design compatible with accessories that fit the sink ledge for expanded prep and cleanup options.
• Requires a minimum 36-inch base cabinet to accommodate the 32-1/2 by 19-1/4 inch footprint.
• cUPC certified for residential and commercial plumbing installations.

Two Equal Bowls, One Streamlined Install

Both bowls measure identically, inside length 14-1/4 inches and inside width 15-3/4 inches, each at 9 inches deep, so neither side shortchanges you on usable basin space. That symmetry makes it easy to keep a dedicated side for soaking and one for active washing, or to divide the sink by task when two people are working at once. The workstation platform means compatible accessories, colanders, cutting boards, and grids, can rest on the sink ledge and put the full bowl area to work.

Black Quartz That Reads as Part of the Counter

The sink is built from quartz composite, a dense material that carries the black finish all the way through rather than as a coating on top. Mounting it under the counter removes any visible rim, so the countertop surface breaks cleanly at the bowl edge. In a dark countertop pairing, the sink disappears into the surface. Against a light counter, the black bowls become the visual anchor of the kitchen. Either way, the undermount profile keeps the surface flat and easy to wipe clean in one pass. The 3-1/2 inch drain opening accepts standard waste fittings.

Where This Sink Fits

This is a sink for kitchens where the workspace matters as much as the look. A designer specifying a dark, high-contrast kitchen will find the black quartz pairs naturally with stone or engineered countertops. A cabinet shop or contractor building out a full kitchen renovation benefits from the cUPC certification, which satisfies residential and most commercial plumbing codes. Because the sink is undermount only, it belongs in a new countertop fabrication rather than a swap into an existing cutout. The 36-inch minimum cabinet width is a hard fitment requirement, so confirm the base cabinet before rough-in.

Common Questions

A Black Workstation Sink Built to Stay in the Counter

Choose the QUWS-880-BL for a high-contrast, workstation-ready undermount sink that integrates cleanly into a solid countertop and keeps both bowls fully available for daily kitchen work.