Black Quartz Top Mount Sink for a Two-Station Kitchen Workflow
The Karran QT-721 is a large/small bowl quartz composite kitchen sink that installs as a top mount drop-in, making it a strong choice for kitchens where a seamless undermount look is less important than a bold, dark finish and an easy installation into any countertop material. Its two-bowl layout divides the sink into a primary wash side and a dedicated prep or rinse side, supporting the kind of parallel workflow that keeps a busy kitchen running.
Key Features
• Top mount drop-in installation fits into any countertop material, including laminate, solid surface, stone, and quartz, with no special countertop preparation required.
• Large/small bowl configuration pairs a generous primary wash bowl with a smaller companion bowl for prep, rinsing, or disposal duty on the right side.
• Quartz composite construction combines 80% natural quartz crystals with 20% high-performance acrylic resin for a surface that is highly resistant to scratches, stains, chips, and heat.
• Black finish delivers a bold, high-contrast look that pairs well with light countertops, matte black fixtures, and contemporary or industrial kitchen design schemes.
• 34 x 22 x 9 inch footprint suits a standard 36-inch sink base cabinet and offers a 9-inch bowl depth for handling full pots and large cookware.
Built for Retrofit and New-Build Kitchens Alike
Because the QT-721 installs from above and rests on a visible perimeter rim, it works equally well in a new cabinet run and as a replacement sink in an existing countertop cutout. There is no requirement for a specific countertop material — laminate, post-form, butcher block, solid surface, stone, and engineered quartz countertops all support a top mount installation. The rim seals with silicone and the sink clips from below, which means a straightforward install without specialized fabrication equipment. For kitchen remodels where swapping out a dated sink quickly is the goal, the drop-in path removes a significant barrier.
The large/small split also extends the sink's usefulness. The larger bowl handles the primary wash load, while the smaller bowl on the right keeps a colander in place, holds an ice bucket, or stages produce during prep — tasks that would otherwise compete for space in a single-bowl sink.
Material and Finish Details
Quartz composite is not a surface coating. The 80% quartz / 20% acrylic resin composition runs through the full thickness of the bowl, so chips and scratches that do reach the surface blend with the body color rather than exposing a contrasting substrate. The Black finish reads as a rich, matte-leaning dark tone that coordinates readily with Matte Black faucet finishes and gunmetal or dark hardware. The non-porous surface resists the everyday staining threats in a working kitchen — coffee, wine, tomato, and cooking oils — and cleans with standard non-abrasive household cleaners.
Who Reaches for This Sink
Homeowners planning a kitchen renovation around a dark or two-tone color palette will find the Black finish useful where most quartz sinks default to white, grey, or concrete tones. Cabinet shops and kitchen designers specifying for clients who want strong visual contrast between the sink and a light stone or quartz countertop will appreciate that the QT-721 delivers that contrast without requiring an undermount installation or special countertop fabrication. Contractors replacing an existing drop-in sink in a laminate kitchen can drop this one in without disturbing the countertop or cabinetry beyond the existing cutout.
Frequently Asked Questions
Does the QT-721 come with mounting hardware?
Confirm included hardware with the spec sheet for this model. Karran's QT series typically supplies sink clips for the top mount installation; check the packing list before ordering additional fasteners.
Is this sink compatible with a garbage disposal?
Disposal compatibility depends on the drain configuration of the small bowl. Karran publishes bowl-specific drain sizes on its spec sheets — confirm the drain opening and flange size against your disposal brand's requirements before ordering a disposal flange separately.
Which side is the large bowl on?
On the QT-721, the small bowl is on the right and the large bowl is on the left, as indicated in the SAP model designation (LH large, RH small). Verify orientation against the spec sheet if your layout requires a specific-handed configuration.
Can I use this sink with a laminate countertop?
Yes. A top mount installation works in any countertop material, including laminate. Trace the rim outline, cut inside the line with a jigsaw after drilling a starter hole, drop the sink in, and seal with silicone. No special router or bevel-bit steps are needed for a top mount install.
Does a drain or grid come with the sink?
The QT-721 is a bare sink; basket strainers, bottom grids, and other accessories are sold separately. If you need a matched grid or strainer, verify the model-specific fit against Karran's accessory tables before ordering.
A Sink That Handles More, Without the Countertop Upgrade
The QT-721 brings a durable quartz composite bowl and a high-contrast Black finish to any kitchen that can take a standard drop-in — no specialized countertop material required, no fabrication trade called in, and a two-bowl layout that handles more of what a working kitchen actually demands.
