KRAUS Quarza 31-inch Undermount Single Bowl Granite Sink - Deep

In this review of the KRAUS Quarza 31-inch undermount single bowl granite kitchen sink, the bottom line is clear: this sink is for homeowners who want a deep, low-maintenance basin that looks like natural granite while standing up to everyday use. The main reason to buy is its advanced quartz composite construction, which pairs a hard, non-porous surface with subtle metallic speckles for an upscale look and practical resistance to impact, scratches, and stains. It installs as an undermount unit to create a seamless countertop transition and simplify cleanup.

Key Features

• Durable quartz composite: Made from natural quartz and premium acrylic resin, the sink delivers a hard, smooth surface that resists chips and scratches during normal kitchen tasks.
• Deep single bowl design: The generous bowl depth and overall dimensions provide room for large pots and pans and help contain splatter while washing.
• Undermount installation: Creates a seamless edge with the countertop so crumbs and water can be wiped directly into the sink for easier cleanup.
• Complete kit included: The sink ships with a stainless steel drain assembly with removable basket strainer, installation hardware, towel and a template for straightforward fitting.
• Easy to maintain surface: The non-porous finish resists staining and stands up to household cleaners while gently rounded corners reduce buildup.

Who It's For

The Quarza single bowl sink is ideal for homeowners renovating kitchens who need a durable, attractive basin that can handle large cookware and frequent use. Its modern undermount profile and granite-like appearance suit both contemporary and traditional layouts, making it a versatile upgrade for many kitchens.

It may be less suited to buyers who need a double-basin configuration or a fully integrated stainless steel look; anyone requiring a shallow prep sink or specialized accessory racks should consider other models. Also, buyers should inspect the unit on delivery, as a small number of customers have reported damage on arrival.

Pros & Cons

Pros

• Attractive granite-like finish with subtle metallic flecks that elevates kitchen aesthetics.
• Deep, single bowl layout accommodates large pots and reduces splatter while washing.
• Durable, non-porous quartz composite resists stains, impact and everyday wear.
• Includes drain assembly and installation kit for an easier setup experience.

Cons

• Some customers report occasional damage on delivery, so careful inspection at receipt is advised.
• Single bowl design may not fit workflows that prefer a separate prep or rinse basin.

Specifications

Brand	Kraus
Model	Quarza 31-inch Undermount Single Bowl (KGU-413B)
External Dimensions	30.5 in L x 17 in W x 9.25 in D
Bowl Dimensions	28.375 in L x 14.5 in W x 8.875 in D
Minimum Cabinet Size	33 in
Material	Quartz composite with acrylic resin
Drain Connection	3.5 in with stainless steel basket strainer

Our Verdict

The KRAUS Quarza 31-inch undermount single bowl sink is a practical, attractive choice for most homeowners who want a deep, low-maintenance basin that mimics natural granite. It offers strong durability, easy cleanup, and a complete installation kit, making it good value for kitchens that need a single spacious sink; buyers should verify condition at delivery and choose a different configuration if they need two bowls.

Frequently Asked Questions

Is this sink easy to clean?
The smooth, non-porous quartz composite surface resists stains and wipes clean easily with common household cleaners.

What hardware is included?
The package includes a stainless steel drain assembly with removable basket strainer, installation hardware, a towel and a template for fitting.

Will it fit my cabinet?
The minimum recommended cabinet width is 33 in; confirm your cabinet opening and countertop cutout before installation.