Black Quartz Workstation Sink Built for a Retrofit Farmhouse Install
The Karran QARWS-740-BL brings the farmhouse-workstation combination to kitchens that weren't originally built for an apron-front sink. Made from quartz composite and finished in Black, this large single-bowl sink installs into a standard 36-inch sink base — no custom cabinetry required — while adding an integrated workstation ledge that keeps prep, washing, and drying in one contained zone.
Key Features
• Retrofit apron-front installation fits a standard 36-inch sink base cabinet after removing the false drawer fronts and cutting the face frame to the 6-1/2-inch apron height.
• Integrated workstation ledge spans the bowl opening and supports sliding accessories for prep, rinsing, and drying without taking up counter space.
• Quartz composite construction combines 80% natural quartz crystals with 20% high-performance acrylic resin for a highly scratch-, stain-, chip-, and heat-resistant surface.
• Large single-bowl configuration provides an uninterrupted basin for washing full-size cookware, sheet pans, and cutting boards.
• Black quartz finish holds its color uniformly through the material, so surface wear does not reveal a lighter underlayer.
• No cutout template included — have the actual sink on hand before cutting the countertop or face frame.
Where the Retrofit Workstation Sink Fits
A kitchen remodel that keeps the existing cabinetry is the primary scenario for this sink. The shorter 6-1/2-inch apron slides into the face-frame opening of a standard sink base after the false drawer fronts are removed and a rectangle is cut from the face frame flush to its top rail. The sink then rests on horizontal support strips set 3/8 inch below the cabinet top edge — not on the countertop or on clips — with vertical supports added beneath for stability. The result is a farmhouse profile in a cabinet that was never designed for one.
The workstation ledge extends the sink's usefulness beyond a single task. A colander, cutting board, or drying rack slides along the ledge rails so prep and cleanup can run simultaneously. For a cabinet shop, a busy residential kitchen, or a rental unit being upgraded without full gut work, the QARWS-740-BL delivers a level of functionality that a standard drop-in or undermount sink cannot match in the same footprint.
Material, Finish, and Surface Performance
Quartz composite at the 80/20 quartz-to-resin ratio is the hardest-wearing material Karran builds sinks from. The Black color runs through the full thickness of the bowl, not just a surface coat, which matters in a workstation context where steel utensils and cookware make regular contact with the basin. The surface is highly scratch-, stain-, chip-, and heat-resistant — suited to heavy daily use without the maintenance demands of stainless steel or fireclay. Black quartz in particular is a practical finish choice for a workstation sink: it hides water spots and minor debris between cleanings better than lighter composite colors, and it pairs naturally with matte black or dark-finished hardware.
Who This Sink Is For
Cabinet shops specifying a remodel package, designers sourcing a statement workstation piece, and homeowners upgrading a kitchen without replacing the cabinetry will each find a clear reason to choose this configuration. The retrofit installation path keeps the project scope manageable — it requires skilled cutting work on the face frame and careful leveling of the support strips, but it does not demand custom cabinet fabrication. The workstation ledge and large single bowl address the needs of serious home cooks and small-scale prep operations where multi-task workflows are the norm, not the exception. Pair this sink with a countertop-mounted faucet, since the sink carries no faucet deck of its own.
Frequently Asked Questions
Does the retrofit install really require cutting the face frame?
Yes. The face frame of the standard sink base must be cut to accept the 6-1/2-inch apron. The false drawer fronts come off first, then a rectangle is cut from the face frame flush to its top rail. The side aprons slide roughly 1/2 inch into that opening. This is a standard woodworking operation for a cabinetmaker, but it is not a no-modification install.
What accessories ship with this sink, and what is sold separately?
Confirm the exact accessory list from the current product listing, as QARWS workstation pack contents vary by model and ordering configuration. A drain assembly is not included and must be ordered separately. Have the sink on hand before fabricating the countertop or face frame opening.
Where does the faucet mount on this sink?
This sink has no faucet deck, so the faucet mounts through the countertop behind the sink. Plan faucet hole placement before the countertop is cut or fabricated.
Is Black quartz composite harder to keep clean than lighter colors?
In practice, Black quartz hides food debris and water spots well between cleanings. The surface is nonporous, so stains do not penetrate the material. Routine cleaning with a mild, non-abrasive cleanser is all that is needed for daily maintenance.
Can this sink be installed in a countertop material other than quartz or stone?
The QARWS is an apron-front farmhouse sink supported on cabinet strips, not a standard undermount sealed to the countertop alone. The countertop sits alongside the sink rather than supporting it, so a range of countertop materials can work. Confirm the specific countertop details with your fabricator before cutting.
A Farmhouse Profile Without Starting Over
The QARWS-740-BL closes the gap between the kitchen a client has and the one they want — delivering the apron-front profile, the workstation functionality, and a Black quartz surface in a package that fits the existing cabinetry.
