Karran Quartz Undermount Sink For New Countertops

Karran quartz undermount sink QU-720-BI provides a 33-1/2 inch wide by 20-1/2 inch deep double 50/50 bowl layout, giving two equal work zones that help separate prep and cleanup in a busy kitchen. The external 9 inch bowl depth creates a generous working area, supporting deeper pots and pans without crowding the counter edge. Internal bowl dimensions of 14-3/8 inches by 17-1/4 inches by 9 inches and 14-3/8 inches by 16 inches by 9 inches define two distinct spaces that help organize workflow on either side of the faucet. Construction from 80 percent crushed quartz plus 20 percent acrylic resin forms a rigid, composite sink body that supports stable undermount installation in stone tops. A matte sink bowl surface finish reduces glare at the work area, supporting a consistent appearance under task lighting.

Key Quartz Sink Details That Support Kitchen Work

• The 33-1/2 inch by 20-1/2 inch external dimensions set a defined footprint that helps plan cabinet and stone cut sizes for this Karran QU-720-BI sink.
• The double 50/50 bowls provide two equal 9 inch deep basins, letting installers position plumbing and drains to match a balanced kitchen workflow.
• Internal bowl sizes of 14-3/8 inches by 17-1/4 inches by 9 inches and 14-3/8 inches by 16 inches by 9 inches guide cutout placement and drain rough-in locations.
• Manufacture from 80 percent crushed quartz plus 20 percent acrylic resin creates a uniform sink body that works with the machined rim for consistent mounting contact.
• The 1-1/4 inch by 3/4 inch machined resin matrix rim establishes a flat bearing surface against stone, helping achieve an even undermount reveal.
• The 3-1/2 inch waste opening matches standard kitchen drain sizing, simplifying trap and disposal alignment under the sink base.

Undermount Installation Details For Stone Countertops

This Karran quartz undermount sink is designed for undermount installation only, setting clear expectations for how it integrates with the countertop. The sink can only be installed in new countertops, aligning it with projects where the stone fabricator is cutting a fresh opening rather than reusing an existing cutout. Compatibility with all stone products lets fabricators pair the sink with their chosen stone material in kitchens or similar spaces. An 1/8 inch overhang is recommended at the stone edge, giving a slight reveal that helps define the transition between stone and sink, though a flush installation is also supported. All external dimensions are approximate to 1/4 inch, providing practical tolerances for templating and CNC programming.

How This Double Quartz Sink Fits Real Kitchens

Where The Karran QU-720-BI Sink Works Best

The Karran QU-720-BI quartz sink, with 33-1/2 inch by 20-1/2 inch external dimensions, suits base cabinets and stone layouts sized around this footprint, guiding layout decisions in kitchen designs. Its double 50/50 bowl format creates two equal 9 inch deep basins, giving one side for washing and the other for rinsing or prep to streamline sink-side tasks. Internal bowl dimensions of 14-3/8 inches by 17-1/4 inches by 9 inches and 14-3/8 inches by 16 inches by 9 inches define real working areas where racks, strainers, or typical cookware can sit without crowding. The matte finish bowl surface helps maintain a consistent look under various lighting conditions, supporting both residential and light commercial kitchen environments where glare control and appearance matter.

Details That Support Reliable Undermount Results

The 1-1/4 inch by 3/4 inch machined resin matrix rim on this Karran quartz undermount sink offers a structured mounting band, creating a predictable bonding and support surface along the sink perimeter. Manufacturing with 80 percent crushed quartz plus 20 percent acrylic resin yields a stable composite that works with the machined rim to support even clamping and adhesive contact during installation. The sink is designed for undermount installation and may not be top mounted, so the rim geometry and bowl shape specifically favor mounting from below the stone. Its ability to be undermounted to all stone products allows stone shops to standardize processes across granite, quartz, or similar materials. The recommended 1/8 inch overhang provides a small lip of stone over the sink edge, giving a defined line for caulking and cleanup, while the option for a flush install lets fabricators match contemporary design preferences. A 3-1/2 inch waste opening aligns with standard kitchen drain fittings, reducing layout changes in the cabinet for plumbing. External dimensions being approximate to 1/4 inch inform template and CNC data, helping programmers account for manufacturing tolerances while targeting a precise fit.

Common Karran Quartz Undermount Sink Questions

Selecting This Quartz Sink For Stone Installations

The Karran QU-720-BI quartz undermount sink combines a 33-1/2 inch by 20-1/2 inch footprint with double 50/50 bowls, giving stone shops and installers clear dimensions for new countertop layouts. Its 80 percent crushed quartz plus 20 percent acrylic resin construction and machined resin matrix rim support reliable undermount installation on all stone products with either a recommended 1/8 inch overhang or a flush reveal. For projects needing a bisque double-bowl quartz sink with a 3-1/2 inch waste opening and matte bowl finish, this model provides defined measurements and mounting details that align directly with fabrication and plumbing workflows.