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Karran QU-721-BL quartz sink gives you a 33-1/2 inch wide by 20-5/8 inch deep double 60/40 bowl layout, so you gain a large and a smaller bowl that support separate prep and cleanup tasks in the same run. The large/small configuration is built into an undermount design, so the sink fits cleanly beneath the countertop edge to create a smooth transition that speeds wipe-down on solid surface projects. Curved rear bowl walls and gently curved side walls shape both bowls, so the sink presents a softer look that visually complements modern and transitional cabinet lines. As a quartz sink in black, it falls within Karran's quartz sinks product class, so it fits where a durable, solid-feeling basin is required in a kitchen workflow.
The QU-721-BL is designed for installation into granite, quartz, and solid surface countertops, so fabricators can cut and polish openings in these materials knowing the sink is intended to hang from the underside of rigid slabs. The undermount configuration supports a continuous countertop surface into the sink, so installers can deliver clean inside edges and users can sweep crumbs and liquids straight into either bowl without catching on a rim. The sink's double 60/40 bowl format gives one larger and one smaller basin, so installers can align the larger bowl where primary washing happens while using the smaller side for rinsing or prep.
This Karran 33-1/2 inch wide by 20-5/8 inch deep double 60/40 bowl undermount sink fits kitchen layouts built around granite, quartz, or solid surface countertops, so it suits residential kitchens that rely on those materials for worktops. The large/small bowl configuration supports a workflow where the larger bowl handles soaking and washing, while the smaller bowl handles rinsing or light prep to keep tasks separated. Curved rear bowl walls and gently curved side walls give the sink a softened interior shape, which ties visually to curved faucet spouts and rounded cabinet profiles. As part of Karran's quartz sinks product class, this quartz composite model suits installations that call for a solid-feeling basin with a consistent interior finish.
Made from 80% natural quartz crystals and pure acrylic resin, the sink provides a dense, engineered surface that handles regular impacts from cookware without feeling thin or flexible in use. Its heat resistance up to 535 F, along with the ability to withstand rapid temperature changes from cold and hot water, supports everyday tasks like moving from boiling-water draining to cold rinses. The non-porous quartz material prevents the spread of germs and bacteria, which keeps the bowl surface more hygienic during food prep and dishwashing routines. A smooth, non-porous surface also means food residue does not stick or stain, so normal cleaning with a cloth and rinsing water clears the bowls efficiently at the end of a shift. Because the material is extremely stain, scratch, abrasion, and impact resistant, the sink maintains its working appearance under repeated use from metal utensils, pots, and dishes. Quartz construction also absorbs vibration and minimizes noise when the sink is in use, which keeps water flow and dish handling quieter in open-plan kitchen settings.
The Karran QU-721-BL quartz sink measures 33-1/2 inches wide by 20-5/8 inches deep, providing a substantial footprint that suits standard kitchen base cabinet layouts.
The Karran QU-721-BL sink is an undermount design for granite, quartz, and solid surface countertops, so it installs from below to create a flush, rim-free edge at the cutout.
The QU-721-BL double 60/40 bowl layout provides one larger and one smaller bowl, allowing separate spaces for washing, rinsing, or prep work within the same sink unit.
The non-porous quartz material on the QU-721-BL prevents absorption and helps prevent the spread of germs and bacteria, supporting cleaner food prep and dishwashing areas.
The QU-721-BL quartz sink is heat resistant up to 535 F and withstands rapid temperature changes, so it handles hot draining and cold rinsing cycles without compromising its surface.
The QU-721-BL curved rear bowl walls and gently curved side walls create a unique aesthetic that pairs well with many kitchen styles while providing a smooth interior for easy cleaning.
The Karran 33-1/2 inch by 20-5/8 inch QU-721-BL quartz double 60/40 bowl undermount sink combines a large/small bowl layout with quartz composite construction, so it serves kitchens that need separate working basins and a solid, heat-resistant surface. Its non-porous, smooth material resists stains, scratches, abrasion, and impact while helping prevent the spread of germs and bacteria, so it stands up to repeated daily use. For projects using granite, quartz, or solid surface countertops, this undermount configuration delivers a clean edge transition into a black quartz sink that is built for regular kitchen workflows.
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