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    Vernon Hills, IL
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    Sinks
    1. Home
    2. Kitchen & Bath Cabinet Accessories
    3. Sinks and Accessories
    4. Sinks
    Item # KAQU671-CN • Mfr # QU-671-CN

    Karran 21-3/8"W x 17-7/8"D Quartz Concrete Single Bowl Undermount Sink - QU-671-CN

    • User manual 1, QU-671-CN
      User manual 1, QU-671-CN
    • Technical data, QU-671-CN
      Technical data, QU-671-CN

    Description

    Karran Quartz Undermount Sink For Kitchens

    Karran quartz undermount sink uses a blend of natural granite, quartz, and premium acrylic resins to create a rigid basin that stands up to daily kitchen use. The 21-3/8 inch wide by 17-7/8 inch deep single bowl layout concentrates space into one work zone, which helps when handling larger pots or pans in a compact cabinet run. This sink is part of Karran's quartz sinks product class, so it is built for cabinet and countertop installations in kitchen and bath projects. The concrete color option provides a uniform tone through the material, giving a consistent look even at cut edges. As a single bowl undermount design, it integrates into the countertop opening and frees the deck for faucet placement, which matters when laying out tight backsplashes or corner installations.

    Material And Design Details That Support Workflows

    • The blend of natural granite, quartz, and premium acrylic resins produces a dense, engineered structure that resists impact damage, reducing the likelihood of chips during normal kitchen tasks.
    • The sink is described as scratch resistant, so contact from common cookware and utensils is less likely to mar the surface, which helps keep the working area looking consistent over time.
    • Heat resistance up to 530 F allows the sink to tolerate high temperature items within that range, which supports everyday cooking workflows where hot cookware may be near the basin.
    • Uniform color throughout means the material color runs through the body, so field modifications at the cutout edges maintain the same appearance as the factory surfaces.
    • The nonporous surface prevents bacteria buildup on the sink body, which simplifies cleaning routines and supports hygienic kitchen and bath environments.
    • The sink is part of a range available in six colors - white, bisque, black, brown, concrete, and gray - which allows coordination with different countertop and cabinet finishes in a project line-up.

    Undermount Installation And Countertop Fit Details

    This Karran single bowl quartz sink is suitable for under-mounting into any solid surface, stone, or quartz countertop, so it integrates beneath rigid tops commonly used in kitchens and baths. The sink cannot be mounted to laminate tops, which directs this model to installations using heavier, structurally stable surfaces. As an undermount unit, it relies on the countertop opening for its finished rim line, helping achieve a flush, easy-wipe transition from deck to basin. All faucets are stated to be countertop mounted, so the installer plans faucet hole boring within the counter material instead of the sink deck, which affects layout decisions on sink centerlines and backsplash spacing. All external dimensions are approximate to 1/4 inch, providing a tolerance range to factor into cutout sizing and support placement.

    How This Quartz Sink Fits Real Projects

    Where This Karran Quartz Undermount Sink Works

    This Karran quartz undermount sink is positioned for kitchen and bath cabinet applications that use solid surface, stone, or quartz countertops, aligning with typical residential and light commercial projects that specify rigid tops. The concrete color option fits schemes where a neutral, cement-like tone is preferred, which can coordinate with stainless, black, or mixed-finish faucet selections mounted in the deck. Because this model is a single bowl design, it focuses capacity into one basin rather than splitting space, which is practical where the cabinet width limits sink size but users still need room for larger cookware. The sink belongs to a quartz sinks product class, signaling its role as a solid, integrated component in higher-spec countertop systems commonly distributed through woodworking supply channels.

    Why The Material And Ratings Matter In Use

    The construction from natural granite, quartz, and premium acrylic resins creates a composite that is both rigid and resilient, supporting daily loading from pots, pans, and dishware without the flex associated with thinner materials. Scratch resistance means that regular sliding of cookware across the bowl is less likely to leave visible marks, which keeps the basin looking consistent through repeated cleaning cycles. Heat resistance up to 530 F provides a clear temperature reference, so workflows that bring hot items near the sink can stay within that performance window. The nonporous surface that prevents bacteria buildup reduces the tendency of residues to penetrate the material, which streamlines wipe-down routines in busy kitchens. Uniform color throughout the body supports field trimming at the cutout, since exposed edges retain the same tone as the factory surfaces, which is useful when fitting sinks into existing or slightly irregular cabinet conditions.

    Common Questions About The QU-671-CN Quartz Sink

    What are the external dimensions of the QU-671-CN sink?

    The QU-671-CN sink has external dimensions of 21-3/8 inches wide by 17-7/8 inches deep, which guides cabinet and countertop cutout planning.

    What materials are used in this Karran quartz sink?

    The Karran quartz sink is made from natural granite, quartz, and premium acrylic resins, creating a composite that combines stone rigidity with engineered durability for kitchen use.

    How heat resistant is the QU-671-CN quartz sink?

    The QU-671-CN quartz sink is heat resistant up to 530 F, so it tolerates high temperature kitchen items within that range during normal workflows.

    Can this Karran sink be mounted to laminate countertops?

    This Karran sink cannot be mounted to laminate tops, directing it to installations with solid surface, stone, or quartz countertops only.

    How is the faucet installed with this single bowl sink?

    All faucets for this sink are countertop mounted, so the faucet holes are bored into the solid surface, stone, or quartz counter rather than the sink.

    What does the nonporous surface of this sink provide?

    The sink's nonporous surface prevents bacteria buildup on the material, which supports hygienic conditions and simplifies cleaning of the bowl area.

    Selecting The QU-671-CN Sink For Your Project

    The QU-671-CN Karran quartz undermount sink combines a 21-3/8 inch by 17-7/8 inch single bowl footprint with a composite of natural granite, quartz, and premium acrylic resins, aligning with solid surface, stone, and quartz countertop installations. Its heat resistance up to 530 F, scratch resistant performance, and nonporous surface that prevents bacteria buildup support long-term function in active kitchens and baths. A 25 years Limited Warranty against manufacturer's defects backs the sink, adding long-horizon support for professional installers and serious DIY buyers planning quartz sink projects.

    Catalog
    X-30
    Color/Finish
    Concrete
    Product Type
    Undermount Sink
    Overall Sink Length (Side to Side)
    21-3/8 in
    Overall Sink Width (Front to Back)
    17-7/8 in
    Minimum Cabinet Width Required
    27 in
    Inside Bowl Depth
    9 in
    Inside Bowl Length
    21-3/8 in
    Inside Bowl Width
    17-7/8 in
    Installation Method
    Undermount
    Designed for Installation Into
    Quartz, Solid Surface, Granite
    Drain Opening Diameter
    3-1/2 in
    Bowl Configuration
    Single
    ADA Compliant
    No
    Certifications
    cUPC certified, IAPMO certified
    Material Type
    Quartz
    Supplier Pack Size
    1
    Sold In
    1
    Catalog
    X-30
    Color/Finish
    Concrete
    Product Type
    Undermount Sink
    Overall Sink Length (Side to Side)
    21-3/8 in
    Overall Sink Width (Front to Back)
    17-7/8 in
    Minimum Cabinet Width Required
    27 in
    Inside Bowl Depth
    9 in
    Inside Bowl Length
    21-3/8 in
    Inside Bowl Width
    17-7/8 in
    Installation Method
    Undermount
    Designed for Installation Into
    Quartz, Solid Surface, Granite
    Drain Opening Diameter
    3-1/2 in
    Bowl Configuration
    Single
    ADA Compliant
    No
    Certifications
    cUPC certified, IAPMO certified
    Material Type
    Quartz
    Supplier Pack Size
    1
    Sold In
    1
    BlackConcreteBisque
    18 in21-3/8 in
    16 in17-7/8 in
    18 in27 in
    7-1/2 in9 in
    14 in21-3/8 in
    9 in17-7/8 in
    UndermountUndermount, Top mount
    Quartz, Solid Surface, GraniteAll countertop materials
    Karran
    $413.11/Each
    Karran 21-3/8"W x 17-7/8"D Quartz Concrete Single Bowl Undermount Sink - QU-671-CN
    Item# KAQU671-CN / MFR Part # QU-671-CN
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    Each
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    Sold In: 1 Each

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