Concrete-Finish Quartz Undermount Sink for Unequal Double-Bowl Kitchens

This Karran undermount kitchen sink is a 60/40 double-bowl quartz sink finished in Concrete, designed to mount beneath granite, quartz, or solid surface countertops in a 36-inch or wider cabinet.

Key Features

• 60/40 double-bowl layout pairs a larger primary bowl with a smaller secondary bowl for flexible task separation.
• Concrete finish quartz composite body blends the texture and warmth of concrete with the durability of a quartz-and-resin material.
• Undermount installation for granite, quartz, and solid surface countertops, keeping the counter edge clean and uninterrupted.
• Requires a minimum 36-inch cabinet to accommodate the full 32-inch side-to-side footprint.
• 3-1/2 inch drain openings in both bowls accept standard drain hardware.
• IAPMO certified for confidence in code-compliance applications.

Two Bowls Sized for Real Kitchen Work

The 60/40 split gives you a larger left bowl and a smaller right bowl rather than two equal halves. That asymmetry is practical: a deeper, wider primary side handles full pots, larger cutting boards rinsed over the sink, or a rack of dishes soaking, while the shallower secondary side stays clear for rinsing produce, draining pasta, or keeping a sponge and soap within reach without crowding the main workspace. Both bowls share the same 9-inch depth, so neither one feels shallow when it counts.

A Quartz Composite Built for Hard Countertops

The sink is made from quartz composite and finished in Concrete, a muted, textured tone that reads as warm gray with the kind of surface variation you expect from a concrete aesthetic. That finish works particularly well set against darker stone countertops, matte subway tile, or white shaker cabinetry where a stark white or high-gloss bowl would break the palette. Because it is an undermount, the sink mounts beneath the countertop surface so the stone or quartz runs clean to the bowl edge with no rim collecting water or debris at the seam.

Where This Sink Fits

This is the right sink for a kitchen remodel or new build where the countertop is granite, quartz, or solid surface and the designer or homeowner wants a concrete finish that bridges industrial and warm-contemporary styles. It suits a primary kitchen sink position in a 36-inch base cabinet, where the 60/40 split supports a household that does real cooking and wants dedicated zones for prep and cleanup. Contractors and cabinet shops specifying a complete sink package will note the IAPMO certification, which covers many residential plumbing code requirements. Because it is an undermount, it must be installed in a new countertop fabrication rather than dropped into an existing cutout.

Common Questions

A Concrete-Finish Sink That Works as Hard as It Looks

Choose this sink when the project calls for a 60/40 undermount bowl in a finish that holds its own against stone countertops and earthy kitchen palettes, backed by IAPMO certification for code-conscious installs.