Retrofit Apron-Front Sink For Standard Sink Base Cabinets
The Karran QAR-740 brings the farmhouse look to kitchens that were not designed for it. This extra-large single-bowl quartz composite sink is built around a 6-1/2 inch apron that slides into an existing 36 inch wide sink base after the false drawer fronts are removed and the face frame is trimmed, letting a remodel gain an exposed-front sink without tearing out and replacing cabinetry.
Key Features
• Retrofit apron design installs into a standard 36 inch sink base cabinet, eliminating the need for a purpose-built farmhouse cabinet.
• Extra-large single bowl provides an uninterrupted basin sized for full sheet pans and large cookware.
• Quartz composite construction combines 80% natural quartz with 20% acrylic resin for a highly scratch, stain, chip, and heat resistant surface.
• White finish offers a clean, timeless appearance that coordinates across most kitchen color schemes.
• 9 inch bowl depth gives generous working clearance for deep pots and tall items.
• No faucet deck means the faucet and any accessories mount through the countertop rather than the sink.
Remodel-Ready Farmhouse Style Without a Cabinet Replacement
The QAR-740's retrofit design is its central advantage for kitchen remodels. Where a standard deep-apron farmhouse sink requires a purpose-built sink base, the QAR-740's shorter apron is engineered to fit into the face-frame opening of an existing 36 inch wide sink base after the false drawer fronts come off. A rectangular section of the face frame is cut flush to its top rail, and the apron sides slide about 1/2 inch into the opening. The sink rests on level support strips set 3/8 inch below the cabinet top edge rather than on the countertop, so it carries its own weight properly once the supports are in place. This is still a real modification to the cabinet — the face frame is cut — but it stops well short of a full cabinet replacement, which is what makes the QAR series practical for remodels.
Because there is no cutout template included with the sink, the actual sink must be on hand before any cuts are made to the cabinet or countertop. Measure from the sink, not from the spec sheet. Karran recommends agreeing on the countertop reveal — typically about 1/8 inch positive or negative — with the client before the stone or solid surface is cut.
Quartz Composite Built for Daily Kitchen Work
The bowl is formed from 80% natural quartz crystals bound in 20% high-performance acrylic resin — a composition that sits well above standard porcelain or stainless in scratch and chip resistance and handles the heat of hot pots without issue in normal use. The White finish runs through the full depth of the composite material, so minor surface wear does not expose a different color underneath. The non-porous surface resists staining from coffee, wine, and other common kitchen spills. The extra-large single-bowl format means nothing interrupts the basin floor: sheet pans, stock pots, and large cutting boards go in flat.
Right For Kitchen Remodels and Custom-Finish Cabinetry Projects
Cabinet shops building kitchen packages for remodel clients will find the QAR-740 useful when the homeowner wants an apron-front aesthetic but the existing cabinetry is standard-format. The retrofit design narrows the scope of work and lets a single fabricator handle both the sink installation and the countertop, rather than requiring a cabinet replacement. Designers specifying kitchens with a farmhouse visual theme and a neutral White palette will find this sink integrates without demanding a premium stone countertop — the quartz composite bowl pairs naturally with laminate, solid surface, quartz slab, and stone tops. Homeowners managing a remodel budget appreciate that the cabinet stays and the result still looks intentional.
What cabinet preparation does the QAR-740 actually require?
The false drawer fronts are removed and a rectangle is cut from the face frame flush to its top rail, sized to the apron dimensions. Level wood support strips are screwed into the cabinet side walls to carry the sink, set 3/8 inch below the cabinet top edge. The apron sides engage the face-frame opening by about 1/2 inch. It is a real modification to the cabinet face frame — just not a cabinet replacement.
Is a cutout template included with this sink?
No template is included. The actual sink should be on hand before the countertop is cut. Karran provides downloadable DXF files for CNC fabrication, but measuring from the physical sink is the recommended approach before any cutting.
Where does the faucet mount on this sink?
The QAR-740 has no faucet deck, so the faucet mounts through the countertop rather than through the sink. Plan faucet hole locations and drilling into the countertop fabrication scope.
What countertop materials work with this sink?
The QAR-740 is an undermount quartz composite sink that can be installed under quartz slab, granite, solid surface, and laminate countertops using standard undermount methods. It does not carry a seamless-series designation, so the seamless laminate installation method specific to Karran's Q Series does not apply here.
Are basket strainers or a bottom grid included?
This SKU is a bare sink listing. Basket strainers and bottom grids are sold separately and must be ordered to match the QAR-740's bowl dimensions.
The Farmhouse Sink Look, Built Into Your Existing Kitchen
The QAR-740 lets a remodel arrive at an exposed-apron kitchen sink without rebuilding the cabinet run — a practical path for fabricators, designers, and homeowners who want the aesthetic without the full scope of a new farmhouse base installation.
