31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Concrete

MODEL: 

QU-670-CN

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31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Concrete

MODEL: 

QU-670-CN

Dimensions

31-3/8" x 18-7/8"
x 9-1/2"

Material

Quartz Composite

Mount Type

Undermount

Cabinet

36"

Finish:Concrete
31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Concrete 31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Black 31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Brown 31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In White 31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Grey 31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Bisque
Package Options:Sink
31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink In Concrete 31-5/8" Undermount Large Single Bowl Quartz Composite Kitchen Sink Kit In Concrete
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Karran Quartz Undermount Large Single Bowl Kitchen Sink

Karran Quartz Undermount Large Single Bowl Kitchen Sink

This large single bowl quartz sink is built for cooks who want one big, uninterrupted basin and a counter that reads as clean as possible. It mounts beneath the countertop with a flat rim and no faucet deck, installing with a small positive or negative reveal into quartz, granite, or solid surface, so the countertop flows from edge to edge with no lip resting on top at the cutout. With nothing raised to work around, crumbs and water wipe straight into the bowl and there is no rim to trap debris during prep. Formed from durable quartz composite, it delivers the look and feel of stone with the resilience a busy kitchen demands.
Karran

Quartz composite is chosen for its balance of durability and easy maintenance, a dense blend of 80% natural quartz crystals and acrylic resin that never needs sealing at any point in its life. The non-porous surface resists the absorption of food residue and liquids, so it stays stain resistant, helps limit the spread of germs and bacteria, and wipes clean with mild soap and water. With a heat tolerance of 535 degrees Fahrenheit, it stands up to rapid temperature changes, from hot and cold water to pots pulled straight off the stovetop, without stress fractures. The composite also absorbs vibration, noticeably reducing the noise of running water and dish handling in open-plan homes.
A Large Single Bowl with Room to Work

A Large Single Bowl with Room to Work

A single bowl at this scale makes daily use feel effortless. With an overall footprint of 31-7/16" x 18-13/16" and a 9" depth, the open interior easily handles full dish loads and lets you stack oversized pots, pans, and baking sheets without angling them against the sides. The generous width leaves room for prep tools and mixing bowls to sit flat rather than crowding the basin. That 9" depth keeps water contained while rinsing dishes or filling tall stockpots, limiting splash without giving up open, workable space.
Matte Quartz in Six Colors
Matte Quartz in Six Colors

Karran quartz wears a matte, smooth finish that absorbs and diffuses light, dialing down glare and resisting the fingerprints and water marks that show on high-sheen surfaces. The color is not painted on but integrated into the material, so it stays fast through years of heavy use, and UV stabilization keeps it from changing or yellowing over time. It comes in six matte colors, white, black, brown, bisque, concrete, and grey, a neutral range that pairs easily with painted or stained cabinetry and the full spread of countertop materials. The softened finish also helps the sink keep an even appearance under a mix of daylight and overhead lighting.
The PK1 Kit and Specifications
The PK1 Kit and Specifications

This sink is available on its own or as a PK1 kit, the simplest way to set it up complete, which adds a custom-fit stainless steel bottom grid that lifts cookware off the basin to guard against scratches, a stainless steel basket strainer, and a bottle of Luster Pro oil for long-term care. On its own, it still ships with the template and mounting clips needed for undermount installation. The QU-670 measures 31-7/16" x 18-13/16" with a 9" depth and fits a minimum 36" base cabinet, installing undermount into quartz, granite, or solid surface countertops with a rear drain that keeps plumbing toward the back of the cabinet for more usable storage. Its standard 3-1/2" drain opening is compatible with most garbage disposals, and the sink is cUPC certified and backed by a Limited Lifetime Warranty.

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