A 34-Inch Drop-In Kitchen Sink Built for the Two-Station Workflow
The Karran QT-721 is a quartz composite top mount sink with a large/small bowl configuration, sized at 34 by 22 by 9 inches and offered here in Concrete. It drops into any standard kitchen cutout and installs with the included clips, making it a practical choice for kitchens that need a dedicated prep side alongside the primary wash bowl.
Key Features
• Quartz composite construction uses 80% natural quartz crystals and 20% acrylic resin for a highly scratch, stain, chip, and heat resistant surface.
• Top mount installation fits new and existing countertops in laminate, solid surface, stone, and quartz without special fabrication tools.
• Large/small bowl layout pairs a roomy primary wash bowl with a smaller prep side for a clean, two-station workspace.
• Kit includes stainless steel basket strainers, bottom grids, and Luster Pro oil so you can complete the install without sourcing components separately.
• Concrete color coordinates naturally with grey cabinetry, concrete-look laminate, white oak, and industrial-style kitchen interiors.
• 9-inch bowl depth handles large cookware on the wash side without water spill-over.
Where a Two-Station Layout Makes a Difference
A large/small bowl sink earns its place in kitchens where one side is always occupied. Keep the wash side running while the smaller bowl holds a colander of rinsed produce, a thawing protein, or a soaking pan. The top mount format means this sink goes into an existing laminate or wood-edge counter without the countertop modification that an undermount installation requires, which is a meaningful advantage in a remodel where the countertop is staying. Cabinet shops specifying for a client renovation or contractors swapping out an older drop-in will find the cutout process straightforward: trace the sink, mark inside the perimeter, drill a starter hole, and jigsaw the opening.
Material and Finish: Concrete Quartz Composite
Quartz composite sinks hold up under the kind of daily punishment that shows quickly on stainless or porcelain. The 80% quartz content gives the surface its hardness against scratching and chipping; the acrylic resin binder keeps it nonporous so stains do not penetrate the way they can on lighter composite materials. Concrete is a medium grey tone that reads as neutral against warm wood cabinetry and as intentional against cool grey or white kitchens. It does not show water spots the way polished stainless does, and the matte texture stays consistent across normal use. The Luster Pro oil included in the kit is formulated for quartz composite care and helps maintain the surface appearance over time.
Who This Sink Suits Best
Homeowners replacing a dated drop-in without touching the countertop will find the top mount format removes the biggest complexity from a kitchen upgrade. Designers specifying for clients who want a concrete or industrial aesthetic without the cost of actual concrete countertops get a surface that echoes the look with far less maintenance risk. For cabinet shops and contractors, the kit format reduces the number of separate orders for a standard install: the basket strainers and bottom grids ship in the same box. The 34-inch footprint fits a standard 36-inch sink base, leaving adequate clearance on each side for the rim clip hardware and supply connections.
Does this sink require a special countertop material?
No. The top mount installation method works with laminate, solid surface, stone, quartz, and wood-edge countertops. The rim rests on top of the counter and is sealed with silicone, so there is no special edge finishing needed, regardless of countertop material.
Is a faucet included with the kit?
No. This -PK1 kit includes basket strainers, bottom grids, and Luster Pro oil. The faucet is sold separately and mounts through the countertop behind the sink.
Which bowl is larger, and how much bigger is it?
The QT-721 uses a 60/40 large/small split. Confirm exact per-bowl dimensions against the spec sheet before ordering bowl-specific grids or strainers, as each bowl takes its own size.
Can this sink be undermounted?
No. The QT-721 is a top mount sink. If you need an undermount quartz sink, Karran's QU Series is the standard undermount line, and the Q Series supports seamless undermount installation in laminate and solid surface countertops.
Is the Concrete color consistent across the whole sink, or is it a surface coating?
Quartz composite color runs through the full thickness of the material, not just the surface. Minor chips or wear at the rim will not expose a differently colored substrate.
A Practical Upgrade with Everything to Finish the Install
The QT-721 in Concrete gives kitchens a durable, design-forward wash station that installs into an existing cutout, ships with its core accessories, and holds up to the scratches, stains, and heat of daily cooking without demanding much in return.
