A Gray Quartz Undermount Sink for Modern Kitchen Countertops

The Karran QU-722-GR is a single-bowl undermount kitchen sink in a Gray quartz composite finish, sized to fit a 36-inch base cabinet and designed to mount beneath granite, quartz, or solid surface countertops.

Key Features

• Single large bowl with 31-inch interior length and 9-inch depth for full-size pots and pans.
• Gray quartz composite material provides a dense, stone-like surface in a neutral tone that coordinates with most countertop palettes.
• Undermount installation into granite, quartz, or solid surface countertops for a clean, seamless counter edge.
• Fits a 36-inch minimum cabinet width with an overall footprint of 33-1/2 inches wide by 21 inches front to back.
• cUPC and IAPMO certified to meet plumbing code requirements in the U.S. and Canada.
• 3-1/2-inch drain opening compatible with standard basket strainers and disposal flanges.

One Deep Bowl for a Full Kitchen Workflow

A single large bowl without a center divider gives more room for oversized cookware, sheet pans, and deep stock pots that a divided sink cannot accommodate. At 31 inches inside and 9 inches deep, this bowl handles a full stack of dishes or a large roasting pan without the rim getting in the way. The undermount position keeps the counter surface running cleanly to the bowl edge, so wiping down is straightforward and there is no rim channel to trap debris.

Gray Quartz That Reads as Part of the Counter

The sink is built from quartz composite, an engineered material that carries the density and visual weight of stone throughout its body. The Gray finish is a mid-tone neutral that sits between the lighter whites and the darker blacks in the Karran quartz line, making it a practical match for both lighter stone counters and darker, moodier palettes. Because the color runs through the composite rather than sitting on the surface, minor scuffs do not leave a contrasting mark.

Where This Sink Fits the Project

This is a sink for a new countertop or a full counter replacement. Undermount installation requires a countertop that can be fabricated to accept the sink from below, and the sink seats into granite, quartz, or solid surface slabs. Plan it into the countertop template before the stone is cut. For a cabinet shop specifying a complete kitchen, the Gray finish gives designers a neutral that does not lock the palette into an all-white or all-black direction. For a contractor sourcing for a kitchen remodel, the cUPC and IAPMO certifications cover code compliance in most U.S. and Canadian jurisdictions.

Common Questions

A Neutral Gray Sink Built to Go the Distance

For a single-bowl undermount that delivers a countertop-flush finish and a finish tone that works with a wide range of kitchen palettes, the QU-722-GR in Gray is a dependable specification for new builds and full remodels alike.