Product Details
The Karran QAR-740 Concrete Quartz Undermount Kitchen Sink Brings Industrial Sophistication to Modern Kitchens
The Karran QAR-740 in Concrete delivers the industrial aesthetic of modern design with the advanced performance of engineered quartz technology. This 34-inch undermount farmhouse sink combines 80% natural quartz crystals with premium acrylic resin to create a sophisticated concrete-finish surface that captures the raw appeal of industrial materials while providing superior functionality. Perfect for contemporary, minimalist, and transitional kitchen designs, the concrete finish offers a unique neutral tone that complements both warm and cool color palettes.
Engineered specifically for homeowners who appreciate modern design trends, this concrete-finish sink provides the authentic look of poured concrete without the maintenance challenges of natural concrete surfaces. The retrofit farmhouse design allows installation into standard 36-inch sink base cabinets, eliminating costly custom modifications while delivering the spacious 31" x 16¾" x 9" bowl capacity that handles commercial-sized cookware and entertaining demands. The subtle concrete texture adds visual depth and tactile interest that standard smooth finishes cannot achieve.
Why the Karran QAR-740 34-Inch Undermount Farmhouse Sink Works Better in Busy Kitchen
• Industrial-Style Concrete Appearance – Delivers authentic concrete aesthetics with subtle color variations and natural stone texture that creates visual depth and modern sophistication
• 535°F Heat Resistance Performance – Withstands direct placement of hot cookware from stovetops and ovens without surface damage, discoloration, or thermal shock cracking
• 80% Natural Quartz Construction – Provides Mohs hardness rating of 7, creating superior scratch and impact resistance compared to natural concrete or composite materials
• Non-Porous Antimicrobial Technology – Prevents bacteria growth and odor absorption while eliminating the sealing requirements of natural concrete surfaces
• Advanced Sound Dampening – Quartz composite material reduces dishwashing noise by up to 70% compared to stainless steel, creating a quieter kitchen environment
• Stain and Water Resistance – Concrete finish naturally conceals hard water deposits and soap residue while resisting permanent staining from foods and beverages
• Retrofit Installation Compatibility – 6½-inch apron depth fits standard 36-inch cabinets without requiring expensive farmhouse sink modifications
• Temperature Change Durability – Handles rapid transitions between hot and cold water without thermal expansion damage or surface cracking
• Low-Maintenance Surface – Requires only soap and water cleaning without special sealers or treatments needed for natural concrete materials
Size and Installation Details
Specification Karran QAR-740 Concrete Industry Standard Overall Dimensions 34" L x 21¼" W x 9" D 33" L x 22" W x 8" D Bowl Interior 31" L x 16¾" W x 9" D 30" L x 16" W x 8" D Material Composition 80% Natural Quartz 70% Composite Average Heat Resistance 535°F Maximum 450°F Typical Weight 44 lbs 38 lbs Average Cabinet Requirement 36" Standard Base 39" Custom Base Drain Opening 3½" Standard 3½" Standard Surface Finish Concrete Texture Smooth Finish
Fits Any Kitchen Design
The QAR-740 Concrete brings authentic industrial style to residential kitchens, creating a focal point that anchors modern design schemes with sophisticated simplicity. The concrete finish provides the perfect balance between raw industrial appeal and refined functionality, making it ideal for loft-style condos, contemporary homes, and commercial-inspired kitchen designs. The subtle texture and neutral gray tone complement modern cabinetry finishes including matte black, warm wood tones, and sleek white lacquer surfaces.
The concrete finish bridges the gap between warm and cool design elements, allowing flexibility in material selection for countertops, backsplashes, and flooring. Unlike natural concrete sinks that require ongoing sealing and maintenance, the QAR-740 maintains its appearance through daily use while providing the visual authenticity that drives current design trends. The generous 9-inch depth accommodates oversized cookware and commercial kitchen tasks while the rear drain placement maximizes cabinet storage space below.
Why This Large Single Bowl Sink Gets Recommended
Interior designers and kitchen specialists consistently specify the QAR-740 Concrete because it delivers the coveted industrial aesthetic without the practical limitations of traditional concrete materials. The engineered quartz construction provides superior performance characteristics including heat resistance up to 535°F, non-porous surface properties, and scratch resistance that natural concrete cannot match. The concrete finish offers unique visual depth with subtle color variations that create authentic material appeal while maintaining consistent quality and performance.
25-Year Performance Guarantee Protects Your Investment
Karran supports the QAR-740 Concrete with a comprehensive 25-year limited warranty covering material integrity, color consistency, and performance characteristics under normal residential use. This warranty protection includes heat resistance performance, non-porous surface properties, and structural durability without requiring special maintenance procedures or sealing treatments. The coverage begins immediately upon installation and includes protection against manufacturing defects, material failure, and performance degradation. Claims processing utilizes digital documentation to ensure rapid resolution and minimal kitchen disruption.
What You Asked About the Karran QAR-740 Farmhouse Sink
Q: How does the concrete finish compare to real concrete sinks?
A: The quartz composite provides authentic concrete appearance with superior durability, heat resistance, and non-porous properties while eliminating sealing and maintenance requirements of natural concrete.
Q: Will the concrete finish show scratches and wear marks?
A: The 80% quartz construction provides excellent scratch resistance while the textured concrete surface naturally conceals minor marks that would show on smooth finishes.
Q: Does this sink work with modern kitchen design trends?
A: The concrete finish perfectly complements contemporary, industrial, and minimalist design styles while providing neutral color compatibility with various cabinet and countertop materials.
Q: How does maintenance compare to stainless steel sinks?
A: Daily cleaning requires only soap and water without special products, and the concrete finish naturally hides water spots and soap residue that show prominently on stainless steel.
Q: Can the sink handle commercial-style cooking demands?
A: The 535°F heat resistance and 9-inch depth accommodate professional cookware and techniques while the quartz construction resists impact damage from heavy pots and utensils.
Q: Is installation different from other farmhouse sinks?
A: The retrofit design specifically fits standard 36-inch cabinets with standard undermount installation, eliminating the custom work required for traditional farmhouse sinks.
Q: How does the concrete texture affect cleaning?
A: The subtle texture adds visual interest while remaining smooth enough for easy cleaning with standard kitchen cleaning products and techniques.
Q: Does the concrete finish complement warm or cool design palettes?
A: The neutral concrete tone bridges warm and cool color schemes, making it versatile for various design directions and material combinations.
Color Options
Black | White | Gray
Installation Accessories Seaming Adhesive
Seam Adhesive in Bisque | Seam Adhesive in Black | Seam Adhesive in Brown | Seam Adhesive in White | Cartridge Mixing Tips
Undermount Clips
Undermount Installation Clips
Stainless Steel Sink Grid
Protective Sink Grid for QAR-740
Sink Care
Luster Pro Sink Conditioner and Protection
What Homeowners Think of This 34-Inch Quartz Kitchen Sink
"The concrete finish gives our modern kitchen exactly the industrial look we wanted without the maintenance headaches of real concrete. The texture adds visual interest while staying smooth enough for easy cleaning. After six months of daily use, it still looks exactly like installation day. The deep bowl handles our largest stockpots and the concrete color perfectly complements our quartz countertops and dark cabinetry."
"We chose the concrete finish for our kitchen remodel because it bridges the gap between our warm wood floors and cool gray cabinets perfectly. The sink performs beautifully - no staining, excellent heat resistance, and the sound dampening is remarkable compared to our old stainless steel. Installation was straightforward with our existing 36-inch cabinet. This sink has become the centerpiece of our contemporary kitchen design."
"As a designer, I specify the concrete finish for clients wanting authentic industrial style without maintenance concerns. The quartz construction provides superior durability while the concrete texture creates visual depth that photographs beautifully. Clients love how it handles heavy cooking demands while maintaining its sophisticated appearance. The 25-year warranty gives everyone confidence in this investment piece."
The QAR-740 Concrete holds IAPMO certification for residential and commercial applications, ensuring compliance with North American plumbing standards. Karran's manufacturing expertise spans over two decades, with professional distribution ensuring proper installation support and product availability.
Get Your Karran QAR-740 Undermount Farmhouse Sink
The Karran QAR-740 Concrete delivers the perfect fusion of industrial aesthetics and advanced performance technology for kitchens that demand both style and substance. With its authentic concrete appearance, 535°F heat resistance, and non-porous antimicrobial surface, this sink anchors contemporary design schemes while handling the most demanding culinary tasks. The retrofit farmhouse design ensures compatibility with existing cabinetry while the comprehensive 25-year warranty protects your investment, making it the ideal choice for modern kitchens that prioritize both form and function
