A Grey Quartz Undermount Sink for a Toned-Down Kitchen

The Karran Q-320-GR is a single-bowl undermount quartz kitchen sink in Grey, designed to mount beneath laminate, solid surface, or granite countertops and sized for a 27-inch or wider base cabinet.

Key Features

• Single-bowl undermount configuration with a 21-5/8 inch by 15-3/4 inch interior and an 8-1/2 inch bowl depth for everyday kitchen tasks.
• Grey quartz composite construction blends the look of stone with a consistent color through the body.
• Compatible with laminate, solid surface, and granite countertops for a seamless undermount bond.
• cUPC and IAPMO certified for plumbing code compliance across most jurisdictions.
• 3-1/2 inch drain opening accepts standard drain fittings and basket strainers.
• Requires a minimum 27-inch base cabinet for proper fit.

Where Grey Earns Its Place

Grey sits between the high contrast of black and the brightness of white, which makes it a useful neutral in kitchens where the countertop, cabinetry, or backsplash is already making a visual statement. It reads as cool and contemporary without competing with surrounding materials. This is the sink to reach for when the design calls for a quiet anchor rather than a focal point, whether the kitchen runs dark with charcoal cabinets or light with pale stone countertops. The single-bowl layout keeps the interior uninterrupted, giving one continuous workspace for large pots, sheet pans, and soaking tasks.

Quartz Composite Build

The sink body is quartz composite, a dense engineered material that carries the weight and character of stone without the variability of a natural slab. The Grey finish runs through the material rather than sitting only on the surface, so chips and wear at the rim edge stay consistent with the rest of the bowl. The undermount installation keeps the countertop edge unbroken above the sink, which simplifies cleaning and gives the finished counter a cleaner profile than a drop-in rim allows.

The Right Install for This Sink

This is an undermount-only sink, and it is built for new countertop installations. It mounts beneath laminate, solid surface, or granite. In solid surface and laminate it can be bonded seamlessly for an integrated look. It is not designed to drop into an existing cutout made for a different sink, so plan it into a countertop that is being fabricated or replaced. Verify the base cabinet is at least 27 inches wide, and check the 24-1/4 inch by 18-1/4 inch footprint against the countertop layout before the slab is cut.

Common Questions

A Neutral Single-Bowl Sink That Disappears Into the Design

Choose the Q-320-GR when the kitchen needs a single-bowl undermount sink that holds its own without drawing attention, in a grey quartz composite that works across a wide range of countertop materials and design directions.