A Gray Quartz Undermount Sink for a Seamless, Modern Kitchen

The Karran QU-720-GR is a 50/50 double-bowl undermount kitchen sink made from quartz composite and finished in gray, for kitchens where a neutral, stone-toned basin ties the countertop and cabinetry together.

Key Features

• Gray quartz composite body that pairs with a broad range of countertop colors and kitchen finishes.
• Equal 50/50 double-bowl configuration with matching 9-inch depth in both basins for flexible task separation.
• Undermount installation into granite, quartz, or solid surface countertops.
• Requires a minimum 36-inch base cabinet to support the 33-1/2 by 20-1/2 inch footprint.
• 3-1/2 inch drain opening in each bowl, sized for standard kitchen drain fittings.
• cUPC and IAPMO certified for plumbing code compliance.

Two Equal Bowls for a Split-Task Workflow

Equal bowl sinks suit kitchens where neither washing nor prep takes clear priority, and both sides need to carry full-size items. With matching 9-inch depth on both the left and right, this sink handles a tall stockpot on one side and a cutting-board rinse on the other without either basin feeling cramped. The gray finish keeps the workspace looking composed even when one bowl is full.

Gray Quartz Composite: Material and Finish

The sink is built from quartz composite, a dense engineered material that reads like stone in color and texture. The gray finish sits in a neutral middle ground, warmer than concrete and cooler than beige, which makes it an easy pairing with white shaker cabinets, dark wood tones, or two-tone kitchens where neither a bright white nor a true black basin would land right. Because it undermounts beneath the countertop surface, the gray bowl becomes a visual element in its own right rather than disappearing under a rim.

Where This Sink Works Best

This is a sink for a primary kitchen where two cooks or two workflows share the basin regularly, and for countertops in granite, quartz, or solid surface where undermount installation is supported. It is a natural fit for a remodel or new build that includes a 36-inch or wider sink base, and for designers specifying a gray-toned kitchen where the sink is meant to anchor a cohesive palette rather than contrast it. The cUPC and IAPMO certifications mean it meets the plumbing code requirements common across residential and light commercial projects.

Common Questions

The Right Gray Basin for a Stone Countertop Kitchen

Choose this sink when the kitchen calls for a neutral quartz bowl that mounts cleanly beneath a solid countertop, holds up to a split-task workflow, and stays out of the way visually while still making the space feel finished.