33-Inch Workstation Sink For Counter-Level Prep and Cleanup
The Karran QTWS-875 is a large single bowl quartz workstation sink in a top mount drop-in configuration, finished in Concrete. Its integrated ledge runs along the bowl rim and supports sliding prep and drying accessories directly over the basin, so the counter stays clear while work happens. At 33 by 22 by 9 inches, it anchors a kitchen workspace without requiring a cutout beyond a standard large sink base cabinet.
Key Features
• Integrated workstation ledge runs the full width of the rim, accepting the included sliding accessories without any added hardware.
• Quartz composite construction (80% natural quartz, 20% acrylic resin) delivers a highly scratch-, stain-, chip-, and heat-resistant work surface.
• Top mount drop-in installation drops into a standard countertop cutout from above, making it compatible with laminate, solid surface, stone, and quartz countertops.
• Concrete finish pairs with grey-toned countertops, matte hardware, and modern or industrial kitchen aesthetics.
• Included accessory set ships in the box: a bottom grid, basket strainer, cutting board, colander, drying rack, and Luster Pro care oil.
• Extra-deep 9-inch bowl accommodates sheet pans, stockpots, and full-size sheet trays without the divider breaking up the space.
How the Workstation Ledge Changes the Way You Use a Sink
Most sink installations treat the basin as the end point of a prep run — rinse here, then move on. The QTWS-875 reverses that. The ledge built into the rim turns the bowl into a prep station: the cutting board slides over it while you work, the colander positions above the bowl for draining, and the drying rack sits in place after the work is done. Nothing needs to be set aside or repositioned between tasks. That workflow benefit is built into the sink itself, not added with a separate rail or rail kit.
The extra depth matters here. A 9-inch bowl handles a sheet pan that would prop awkwardly in a shallower basin. Pasta pots, canning jars, and large colanders sit flat rather than angled. The single bowl configuration means none of the working depth is surrendered to a divider.
Concrete Finish on a Quartz Composite Shell
The Concrete color is a warm mid-tone grey that reads differently than a bright white or a true black quartz sink. It works naturally alongside grey or graphite countertops without competing, and it gives a warmer result than cold stainless in kitchens with wood or mixed-material surfaces. The quartz composite shell is described by the manufacturer as highly resistant to scratches, stains, chips, and heat — the material holds up under the kind of daily contact that shows wear quickly on lighter or glossier surfaces. Because the color runs through the full composite body, minor surface contact does not produce the visible chips or contrast marks a glazed or coated surface would show.
Where This Sink Fits Best
The QTWS-875 suits a primary kitchen sink position where meal prep, cooking cleanup, and dish handling happen at the same station. Cabinet shops and kitchen designers specifying a complete renovation will find it a clean spec: the drop-in installation accommodates any countertop material, so it does not constrain the counter selection the way a seamless undermount would. Contractors doing a sink swap or retrofit appreciate the top mount path for exactly the same reason — it works with the existing counter without requiring a new cutout profile or specialized bonding method. Homeowners who hand-wash large items or batch-cook will notice the single bowl and full depth first.
Frequently Asked Questions
Does the top mount installation work with my existing laminate countertop?
Yes. The drop-in rim rests on top of the counter surface, so it covers the cut edge regardless of countertop material. Laminate, solid surface, stone, and quartz countertops are all compatible with this installation method.
What accessories ship with the QTWS-875?
The sink ships with a bottom grid, a basket strainer, a cutting board, a colander, a drying rack, and a bottle of Luster Pro care oil. Nothing additional is implied.
Where does the faucet mount on a top mount workstation sink?
The QTWS-875 does not have a built-in faucet deck with pre-drilled holes. Faucet placement is determined by the countertop — drill the faucet hole through the counter at the position that suits your layout.
Is a drain included?
A basket strainer is included. A full drain assembly connecting to the household drain line is not included and should be ordered separately to match your plumbing configuration.
Can I add more accessories to the ledge later?
The ledge accepts Karran workstation accessories designed for this series. Replacement and add-on pieces are available separately and sized to fit the QTWS model ledge.
A Prep Station Built Into the Sink
The QTWS-875 puts an organized prep workflow at the sink rather than beside it — the ledge, the accessories, and the full-depth single bowl are already there when the counter is installed. In Concrete, it holds its look through years of daily use.
