A Single-Bowl Undermount Sink Built for High-Use Kitchens
The Karran QU-812 is a large single-bowl quartz composite undermount kitchen sink in Black, sized at 32-1/4 by 19-1/4 inches with a 9-inch bowl depth. This -PK1 kit includes stainless steel basket strainers, bottom grids, and Luster Pro oil, making it a ready-to-install package for new construction and renovation projects alike.
Key Features
• Quartz composite construction delivers a highly scratch-, stain-, chip-, and heat-resistant bowl made from 80% natural quartz crystals and 20% acrylic resin.
• Large single-bowl layout gives an uninterrupted interior that accommodates sheet pans, large cookware, and oversized items without a divider in the way.
• 9-inch bowl depth adds working volume and helps contain splatter during heavy prep or washing tasks.
• Undermount installation positions the sink beneath the countertop for a clean, wipe-down edge in quartz, granite, and solid surface countertops.
• -PK1 kit contents include stainless steel basket strainers, bottom grids, and Luster Pro oil, so the sink arrives with the components needed to finish the install.
• Black finish provides a high-contrast look that coordinates with dark cabinetry, matte fixtures, and bold countertop materials.
Where This Sink Fits the Work
The QU-812's uninterrupted basin is built for kitchens where large-format tasks dominate the sink routine: rinsing full sheet pans, washing large stock pots, or handling prep work that a divided bowl would make awkward. The 9-inch depth keeps water and splatter contained during those tasks without requiring the user to lean over an unusually deep rim. Because it undermounts beneath the counter, the finished edge stays wipe-clean and free of the debris traps a rim creates — a practical advantage in a working kitchen that sees daily heavy use.
This is also a natural fit for new construction and full kitchen renovations where the countertop is being fabricated from scratch. The undermount path works in quartz, granite, and solid surface countertops. The faucet mounts through the countertop behind the sink rather than through a deck on the sink itself, so hole placement and faucet selection are planned at the countertop stage.
Material and Finish
Karran's quartz composite is 80% natural quartz and 20% acrylic resin, a combination that lands between natural stone and engineered surfaces in both feel and performance. The material is highly resistant to scratches, stains, chips, and heat — the kind of abuse a primary kitchen sink collects over years of daily use. Unlike stainless steel, quartz composite does not show water spots or ring marks from wet cookware, and its matte surface texture holds up without requiring a polished finish to look maintained.
The Black colorway runs through the full depth of the material rather than sitting as a surface coating, so minor surface wear does not reveal a different color beneath. The included Luster Pro oil is formulated to keep the quartz surface looking its best after install and through regular use.
Right for Cabinet Shops, Designers, and Renovation Contractors
Cabinet shops specifying a complete sink package for a kitchen project get a resolved kit here: the sink, grids, basket strainers, and care oil ship together, cutting down on the coordination required to source components separately. Designers specifying dark or mixed-finish kitchens will find the Black quartz integrates cleanly with matte black faucets, Gunmetal Grey hardware, or Oil Rubbed Bronze fixtures without requiring a perfect finish match. Renovation contractors working on a kitchen where the countertop material is quartz, granite, or solid surface get a straightforward undermount path with a finished, wipe-clean counter edge as the result.
Frequently Asked Questions
Does this sink install seamlessly in laminate countertops?
No. The QU-812 is a standard quartz undermount sink. Seamless laminate installation is specific to Karran's Q Series. The QU-812 is designed for undermounting in quartz, granite, and solid surface countertops.
Does the kit include a drain assembly or mounting clips?
The -PK1 kit includes stainless steel basket strainers, bottom grids, and Luster Pro oil. Mounting clips and a drain assembly are not listed as included; plan for those as separate items based on your countertop fabricator's requirements.
Where does the faucet mount on this sink?
The QU-812 has no faucet deck. The faucet mounts through the countertop. Hole count and placement are determined at the countertop fabrication stage, so coordinate faucet selection before the cutout is made.
Will the Black color fade or chip to show a different color underneath?
The Black colorway is integral to the quartz composite material, not a surface coating. Normal wear does not reveal a different color beneath the surface.
What countertop materials work with this undermount installation?
The QU-812 is designed for undermounting in quartz, granite, and solid surface countertops. It is not engineered for seamless installation in laminate.
One Package, Ready to Drop In
The QU-812 in Black delivers a deep, uninterrupted work basin in a material built to hold up through years of daily kitchen use, with the strainers, grids, and care oil already in the box so the install finishes clean.
