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Internet # 305752357

Model # QU-721-BI

Store SKU # 1003285979

Undermount Quartz Composite 33 in. 60/40 Double Bowl Kitchen Sink in Bisque

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  • 33.50 in.x 20.38 in. x 9 in. min. cabinet size required is 36 in.
  • Durable: impact, scratch and heat resistant up to 535°F
  • Low maintenance: smooth surface that’s easy to clean and maintain
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Product Details

About This Product

Karran QU-721 stylish curved rear bowl walls and gently curved side walls gives this 60/40 large/small bowl design a unique and appealing aesthetic. Its quartz composite material gives it outstanding durability and will provide years of trouble-free use. This undermount double bowl design is available in a selection of 6 elegant color choices to compliment any decor. Karran Quartz sinks are a great compliment to your home improvement project. Let this 60/40 double bowl quartz kitchen sink help you in the day-to-day kitchen tasks. Features & Benefits: Designed for installation into granite, quartz and solid surface countertops. Made from 80% natural quartz crystals and pure acrylic resin. Heat resistant up to 535°F and can withstand rapid temperature changes from cold and hot water. Durable quartz material is non-porous, preventing the spread of germs and bacteria. Smooth, non-porous material means food residue won't stick or stain the sinks surface.


  • Extremely stain, scratch, abrasion and impact resistant
  • Quartz material absorbs vibration and minimizes noise when in use
  • Natural quartz combined with pure acrylic resins provides deep, rich colors with a choice of 6 to choose from, and UV stabilization to keep those colors looking like new for years
  • Regular cleaning is simple with just a cloth and soapy water
  • Rear drain locations provide more storage room in your cabinet below and 9" deep bowls provide plenty of room to accommodate all your cookware
  • Series: Quartz QU Series
  • Bowl configuration: Large/small bowl
  • Overall sink length (side to side): 33-1/2"
  • Overall sink width (front to back): 20-3/8"
  • Inside bowl dimensions: Left - 18" x 18" x 9"
  • Inside bowl dimensions: Right - 11-1/8" x 16-1/2" x 9"
  • Minimum cabinet size required: 36" sink base cabinet
  • Drain opening size: 3-1/2"
  • Compatible with most garbage disposals
  • Approximate weight: 36lbs
  • Certifications: cUPC certified
  • Accessories included with sink: Template and clips
  • All dimensions are accurate to 1/4 in
  • Return Policy

Product Information

Internet # 305752357

Model # QU-721-BI

Store SKU # 1003285979



Bowl 1 Front to Back Width (in.)

17.5 in

Bowl 1 Left to Right Length (in.)

17.5 in

Bowl 1 Top to Bottom Depth (in.)

9 in

Bowl 2 Front to Back Width (in.)

16 in

Bowl 2 Left to Right Length (in.)

11 in

Bowl 2 Top to Bottom Depth (in.)

9 in

Sink Front to Back Width (in.)

20.375 in

Sink Left to Right Length (in.)

33.5 in

Sink Top to Bottom Depth (in.)

9 in


Bowl Split


Bundle Type

Sink Only



Drain Location


Faucet Included

Without Faucet


Heat Resistant


Sink Only

Kitchen Product Type

Kitchen Sink

Minimum Cabinet Size (in.)


Mount Type


Number of Bowls

Double Bowl

Number of Faucet Holes


Product Weight (lb.)

42 lb



Sink Finish Type


Sink Material


Sink Shape


Warranty / Certifications

Certifications and Listings

IAPMO Certified

Manufacturer Warranty

25 year warranty

Questions & Answers

Q:are there sink racks available for this sink?
by|Sep 26, 2021
1 Answer
Answer This Question

A:  Thank you for contacting Karran. Grids are available for this sink and can be ordered with the sink as a package. https://www.homedepot.com/s/qu-720-bl-pk1?NCNI-5. If you need further assistance, please contact customer service at 866-452-7726 or via email at info@karran.com.

by|Sep 26, 2021
    Q:Can a disposal be installed with this?
    by|Dec 16, 2018
    1 Answer
    Answer This Question

    A:  Yes, a garbage disposal can be installed on this sink.

    by|Mar 5, 2019
      1 found this answer helpful
      Showing 1-2 of 2

      Customer Reviews

      4.4 out of 5

      • 4.4 out of 23 reviews
      • 93% recommend this product
      Filter by:
      Showing 1-10 of 23 reviews
      Great looking sink
      Love the look of this sink & the separated sections. Sets off the counter top
      • Verified Purchase
      • Recommended
      Love my new sink!
      This sink is perfect! I love it. The larger bowl is big enough for large pots and pans and the smaller one is just right for scraping off dishes and rinsing.
      • Verified Purchase
      • Recommended
      Wonderful sink and addition to our kitchen
      Beautiful finish! Easy to maintain and just the right size for our family.
      • Verified Purchase
      • Recommended
      Concerned over how long the sink will look good
      Love it but have noticed a few scratches already and had difficulty finding sink protectors for sizes of sink
      • Verified Purchase
      Very professional sink. Beautiful brown shade.
      Very nice sink. Loved the curved back end. Makes it stand out from other sinks. An extra bonus is the sink grates that sit in the bottom of the sink. Included. Also the two drain attachment units are included. Nice touch. I got the brown sink which is harder to find. Matches everything. My only reason it doesn't get a five star rating is I don't know how long the sink will last in new condition.
      • Verified Purchase
      • Recommended
      • Verified Purchase
      Stlll waiting for quartz countertops to go back on sale...
      Stlll waiting for quartz countertops to go back on sale so we can finish the kitchen remodel
      • Verified Purchase
      Love my new sink
      Like the devided sink with a smaller side good for washing veggies and thawing meats. The larger fits 2 pans for washing.
      • Verified Purchase
      • Recommended
      Wonderful sink!
      Beautiful sink! We love everything about this sink; roomy, easy to clean, the bottom grids are great for keeping hot pans from the surface. Highly recommend!
      • Verified Purchase
      • Recommended
      Perfect accent
      I really love this 60/40 split sink! It’s perfect for cleaning up after meals, small side has the garbage disposal for rinsing the dishes, while clean dishes are separate on the larger side. I had new quartz countertops put in , which are mainly white, so the black sink is stunning! I would highly recommend this sink if you are looking for a quality alternative to stainless steel.
      • Verified Purchase
      • Recommended
      Showing 1-10 of 23 reviews