Black Quartz Undermount Sink for a Workstation Kitchen

The Karran QUWS-875-BL is a single-bowl undermount workstation sink in Black quartz composite, sized for a 36-inch base cabinet and built to mount beneath granite, quartz, or solid surface countertops.

Key Features

• Single-bowl workstation configuration with a 30-inch inside bowl length for generous prep space.
• Black quartz composite material that holds the color through the body of the sink.
• Undermount installation into granite, quartz, or solid surface countertops.
• 9-inch inside bowl depth for washing large pots and sheet pans without splashing.
• 3-1/2 inch drain opening sized for standard kitchen strainers and disposal flanges.
• cUPC certified to meet North American plumbing code requirements.

A Single Basin Built Around Prep and Washing

A workstation sink is designed to stay busy. The single bowl gives one continuous basin rather than splitting the space in two, which means a full-size sheet pan, a large stockpot, or a wide cutting board fits without having to angle it around a divider. At 9 inches deep, the bowl holds volume without sending water over the rim during a busy meal prep. The workstation format suits a primary kitchen sink where the countertop is set up to support accessories above the bowl.

Quartz Composite in a Through-Body Black Finish

This sink is built from quartz composite, a dense material that carries the Black color uniformly through the sink body rather than just at the surface. That construction means chips and scratches are less visible than they would be on a coated or enameled surface, since the material beneath matches the color above. The matte texture of quartz composite also holds up against the daily friction of pots, pans, and cleaning without the sink looking worn. Because the source confirms cUPC certification, this sink meets the plumbing code requirements for residential and commercial installations in the United States and Canada.

Where This Sink Fits

This sink is the right choice for a kitchen remodel or new build centered on a dark or high-contrast aesthetic, where a Black undermount bowl anchors the countertop rather than blending into it. It installs under granite, quartz, or solid surface, so it works naturally in kitchens where the countertop is already one of those materials. The 36-inch minimum cabinet width requirement means it belongs in a standard wide base cabinet, making it a straightforward fit for most kitchen layouts. Designers and contractors specifying a workstation sink for a client who wants single-bowl capacity with a bold finish will find this a clean, code-compliant option.

Common Questions

One Bold Basin That Gets Work Done

For a kitchen where the sink is meant to be seen as much as used, this Black quartz undermount workstation sink delivers the depth, the capacity, and the finish to match a serious countertop installation.