A Top Mount Quartz Sink Ready for the Everyday Kitchen Workload
The Karran QT-721 is a large/small bowl quartz top mount sink in Gray, sized at 34 by 22 by 9 inches and designed to drop into virtually any countertop material. It ships as a kit with basket strainers, bottom grids, and Luster Pro oil already in the box, so the install is complete from day one.
Key Features
• Large/small bowl layout pairs a primary wash basin with a dedicated prep or disposal side in a single footprint.
• Top mount installation drops in from above and works with laminate, tile, stone, quartz, and solid surface countertops without requiring a specialized cutout method.
• 80% quartz, 20% acrylic resin construction delivers a surface that is highly scratch, stain, chip, and heat resistant under daily kitchen use.
• Gray (GR) quartz color holds up against discoloration over time and integrates naturally into contemporary and transitional kitchen designs.
• Kit includes basket strainers, bottom grids, and Luster Pro oil, covering the components needed to put the sink into service immediately.
• 9-inch bowl depth accommodates tall stockpots and large baking dishes in the primary basin without cramping the secondary prep side.
Two Basins, One Organized Workflow
The large/small bowl split gives a working kitchen two dedicated stations without doubling the cabinet footprint. The larger basin handles the main wash and soak work — rinsing produce, soaking sheet pans, and clearing dinner dishes — while the smaller bowl stays open for prep tasks or holds a disposal. In a kitchen where the sink is running constantly through meal prep, cooking, and cleanup, having that separation built into the fixture cuts down on the back-and-forth that a single bowl demands. Because the QT-721 mounts from the top, the visible rim also covers the countertop cut edge entirely, which simplifies the fabrication step for laminate and tile installations and removes the need for a finished stone edge at the cutout.
Gray Quartz Built for a Kitchen's Daily Reality
Quartz composite is not a delicate material. The 80% quartz content in this sink makes the surface genuinely tough against the abuse a busy kitchen delivers — cast iron set down without thinking, acidic foods left sitting, the scrape of a knife across the basin. The Gray color reads as a warm mid-tone that holds its look without showing every water spot, making it a practical match for both light and dark cabinet palettes. Because the material is non-porous throughout, there is no coating to wear through and no substrate to stain if the surface gets scratched. The bottom grids in the kit keep cookware off the basin floor and reduce that kind of contact in the first place, while the Luster Pro oil is formulated to maintain the quartz's appearance over time.
Where the QT-721 Fits Best
This sink is well suited to a household kitchen handling full daily use, a rental property where low-maintenance and durable finishes matter, or a remodel where the countertop is laminate or tile and the install needs to stay straightforward. Cabinet shops specifying kitchen packages will find the top mount format and included kit contents streamline the process from order to install. The 34-inch overall width fits a standard 36-inch sink base cabinet with the room needed for clips and plumbing clearance. For designers working on transitional or contemporary kitchens where gray tones anchor the space, the GR quartz reads as a grounded neutral that holds under changing light conditions.
Does this sink work with laminate countertops?
Yes. Top mount installation is compatible with all common countertop materials, including laminate. The rim rests on the surface and is sealed with silicone, so the cut edge of the laminate is fully covered and does not need a finished treatment.
What comes in the kit, and is a drain included?
The kit includes stainless steel basket strainers, bottom grids for both bowls, and Luster Pro oil. The basket strainers serve as the drain component at each bowl opening. No separate drain assembly purchase is required to put the sink into service.
Which side is the larger bowl on?
The QT-721 is a large/small bowl configuration. For orientation of the larger bowl, reference the model's spec sheet or the cutout template, which shows the bowl layout as installed. Confirm the orientation before making your countertop cutout.
Is quartz composite heat resistant?
Karran describes the quartz composite material as highly heat resistant. For ongoing care and to protect the surface, using a trivet or pad under very hot cookware is recommended practice.
Does a faucet come with the kit?
No faucet is included with the QT-721 PK1 kit. The sink has no pre-drilled faucet holes, so the faucet mounts through the countertop. Select the number and placement of faucet holes based on your faucet's mounting requirements before cutting.
A Sink That Shows Up Ready
The QT-721 in Gray ships with the components to complete the installation and start using the sink the same day — no separate grid or strainer orders required. For a kitchen that needs both capacity and durability without a complicated install, it delivers exactly that.
