Karran QU-722-BL Quartz Sink For New Installs

Karran QU-722-BL quartz sink is a 33-1/2 inch wide by 21 inch deep single bowl undermount sink that creates a generous work area, so installers can deliver a roomy kitchen basin in a standard base cabinet layout. The internal bowl measures 30 inches by 18 inches by 9 inches, providing a deep washing space that helps contain splashes and handle larger pots within the countertop opening. Manufactured from 80 percent crushed quartz plus 20 percent acrylic resin, the bowl combines mineral rigidity with a bonded resin structure, supporting a solid-feeling installation in everyday use. A 1-1/4 inch by 3/4 inch machined resin matrix rim provides a defined edge for undermounting, which helps you achieve a consistent reveal line along stone countertops. The sink bowl surface has a matte finish, giving the working area a muted look that can help reduce visual glare under task lighting.

Quartz Sink Details That Support Install Projects

• The 33-1/2 inch by 21 inch external dimensions set a clear footprint, helping you plan base cabinet sizing and countertop cutout layout before fabrication.
• The 30 inch by 18 inch by 9 inch internal bowl dimension defines usable volume, so you can judge clearances to faucets, backsplash, and nearby fixtures during design.
• The 80 percent crushed quartz plus 20 percent acrylic resin construction provides a consistent composite material, which supports predictable performance when undermounted to stone tops.
• The 1-1/4 inch by 3/4 inch machined resin matrix rim creates a regular mounting band, helping you position the sink accurately under the countertop edge.
• The 3-1/2 inch waste opening matches a common drain size, simplifying alignment with standard kitchen plumbing layouts under the cabinet.
• The matte finish on the sink bowl surface gives a non-gloss working area, which fits well under bright kitchen lighting and reduces reflected shine.

Undermount Installation And Countertop Requirements

This single bowl undermount quartz sink is designed for undermount installation and may not be top mounted, directing you to a single, defined mounting method that pairs with stone surfaces. The sink can be undermounted to all stone products, so it works across granite, quartz, and similar rigid countertop materials during fabrication. It can only be installed in new countertops, not existing countertops with an existing sink cutout, which focuses its use on remodels receiving new tops or on new construction. A 1/8 inch overhang is recommended along the rim, giving fabricators a starting point for a controlled reveal that helps contain water at the edge, though a flush install is also supported for a different visual line. All external dimensions are approximate to 1/4 inch, providing an accuracy range that fabricators can use when planning clearances.

How This Quartz Sink Fits Real Kitchen Workflows

Where This Karran Quartz Sink Performs Best

This quartz black single bowl undermount sink from Karran sits in the quartz sinks class, placing it squarely in solid-surface oriented kitchen and bath projects where a composite bowl is preferred. With its 33-1/2 inch by 21 inch footprint and 30 inch by 18 inch by 9 inch internal bowl, the sink works well in kitchens needing a large, uninterrupted basin that still fits typical base cabinet runs. The undermount requirement ties it to stone countertops, so it fits naturally into granite, engineered stone, and similar solid-top installations. The ability to undermount to all stone products gives flexibility when a project mixes different stone materials across zones. The matte finish on the bowl surface supports use in high-light environments, since it provides a low-sheen work area that aligns visually with many modern stone textures.

Details That Support Accurate Fabrication And Fit

The 1-1/4 inch by 3/4 inch machined resin matrix rim on the Karran quartz kitchen sink establishes a defined band for bonding to the underside of stone tops, which supports precise edge alignment during undermount installation. A recommended 1/8 inch overhang provides a clear guideline for fabricators, helping them set a consistent reveal that controls water at the countertop edge and presents a uniform sightline. Because all external dimensions are approximate to 1/4 inch, drafters and CNC operators can account for slight variances when planning cutouts while still relying on the stated size range. This sink may be undermounted to all stone products, so one model can be specified across projects that use different stone types without changing the cutout plan. Digital templates for CNC machines are available at www.karran.com, supporting automated stone fabrication workflows that rely on accurate digital patterns.

Common Karran QU-722-BL Quartz Sink Questions

Choose This Sink For Stone Undermount Projects

The Karran QU-722-BL quartz sink combines a 33-1/2 inch by 21 inch external size, a 30 inch by 18 inch by 9 inch single bowl, and a 3-1/2 inch waste opening to support full-size kitchen use. Its 80 percent crushed quartz plus 20 percent acrylic resin build, machined resin matrix rim, and matte finish work together for stone undermount installations. With suitability for undermounting to all stone products and use only in new countertops, it fits new-build and full-countertop replacement projects. Select this single bowl undermount quartz sink when you need a defined footprint, deep basin, and clear installation parameters for stone tops.