A White Quartz Undermount Sink for a Clean, Seamless Kitchen Counter

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

Key Features

• White finish with a matte quartz-composite surface that suits both bright and neutral kitchen palettes.
• Single bowl configuration with a 21-5/8 inch by 15-3/4 inch interior and 8-1/2 inch depth for full-size pots and pans.
• Undermount installation into laminate, solid surface, or granite countertops.
• Quartz composite construction from the Karran Q-Series, certified cUPC and IAPMO.
• 3-1/2 inch drain opening for standard basket strainer and disposal flange compatibility.
• Minimum 27-inch cabinet width required with an overall footprint of 24-1/4 by 18-1/4 inches.

What the White Finish Brings to the Kitchen

White is the most versatile color in a kitchen sink lineup. It reads as clean and bright against dark stone countertops, holds its own in an all-white design, and bridges the gap between warm cream cabinetry and cool gray counters without looking like an afterthought. The matte quartz surface softens what would otherwise be a stark white, giving the bowl a consistent, low-glare appearance that holds up well under daily use.

The single bowl keeps the full interior open for deep pots, sheet pans, and oversized cutting boards. With 8-1/2 inches of depth, the bowl handles volume cooking without splashing, and the interior dimensions leave enough room to turn a large stockpot or hotel pan without wedging it in sideways.

Quartz Composite Material and Certifications

The Q-320 is built from quartz composite, a dense engineered material that gives the sink a solid, stone-like feel without the weight penalty of fireclay or natural stone. The White finish is uniform through the material rather than a surface coating, so chips and scratches at the rim edge do not expose a different color beneath. The sink carries cUPC and IAPMO certifications, confirming it meets North American plumbing code requirements for kitchen sink installations.

Where This Sink Fits Best

This is a practical choice for a primary kitchen sink in a remodel or new build where the countertop is laminate, solid surface, or granite and the base cabinet is at least 27 inches wide. Designers specifying a white undermount for a transitional or contemporary kitchen will find the Q-320's matte surface easier to coordinate than a glossy porcelain bowl. Cabinet shops building sink bases can confirm fit against the 24-1/4 by 18-1/4 inch overall footprint. Homeowners working on a kitchen refresh who want the clean look of an undermount without switching to a stone countertop will find that laminate-compatible undermount options are less common, making this a useful specification where a solid surface or post-form counter is already planned.

Common Questions

One Sink That Works Across a Lot of Kitchen Plans

The Karran Q-320 in White delivers a clean, certified undermount single-bowl sink that fits a broad range of countertop materials, a practical spec for a primary kitchen sink in new construction or a planned remodel.