A Gray Quartz Undermount Sink for Kitchens That Need a Defined Work Split

This Karran quartz undermount kitchen sink delivers a 60/40 split double bowl in Gray, giving one large basin for washing and a smaller one for rinsing or prep in a configuration that mounts cleanly beneath a hard countertop.

Key Features

• 60/40 split double bowl with a larger left basin and a smaller right basin for separating tasks at the sink.
• Undermount installation designed for quartz, granite, and solid surface countertops with a minimum cabinet width of 36 inches.
• Quartz composite construction in a Gray finish that coordinates with cool-toned and neutral countertop palettes.
• 9-inch depth in both bowls for handling tall pots and deep stacks of dishes.
• cUPC and IAPMO certified for use across North America.
• 3-1/2 inch drain openings in each bowl for standard drain and disposal flanges.

Two Bowls, Two Jobs

A 60/40 split gives the larger left bowl the space for soaking sheet pans, colanders, or tall stockpots, while the right bowl stays available for rinsing or a secondary prep task. That division of labor is what a 50/50 double bowl cannot offer: the left side is genuinely large enough to work in, not just a mirror of the right. Both bowls sit at a 9-inch depth, so neither side is shallow. The undermount installation keeps the countertop edge uninterrupted at the sink line, which makes sweeping prep scraps directly into the basin fast and sanitary.

Gray Quartz in the Kitchen

The Gray finish on this sink reads as a warm-to-neutral gray that integrates naturally with concrete-look quartz slabs, light gray laminates, and white shaker cabinetry, as well as darker charcoal countertops where a tonal match is more important than contrast. Quartz composite sinks hold color consistently through the material rather than relying on a surface coating, so chips and wear do not reveal a different color underneath. The finish also avoids the hard-water spotting that shows immediately on polished stainless, making everyday maintenance more forgiving.

Where This Sink Fits

Plan this sink into a new countertop or a countertop replacement where the fabricator can cut for an undermount sink. It is designed to install beneath quartz, granite, or solid surface only and is not intended for laminate or drop-in applications. The minimum cabinet width required is 36 inches. Kitchen designers specifying a gray-integrated palette and cabinet shops building for a designer spec will find this a straightforward fill for the undermount quartz category, and homeowners doing a full kitchen remodel who want a larger working bowl on the left will find the 60/40 configuration more practical than an equal split.

Common Questions

A Gray Undermount Sink Ready to Work

Choose this Karran 60/40 quartz sink when the kitchen needs a gray-integrated undermount basin with a genuinely large working bowl on one side and certified plumbing compliance on both.