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Description
Karran Fusion 33" Undermount Stainless Steel Kitchen Sink with Accessories, 18 Gauge, UUMSB3321-PK1Karran Fusion 33" Undermount Stainless Steel Kitchen Sink with Accessories, 18 Gauge, UUMSB3321 PK1 Karran USA is one of the leading manufacturers of sinks and faucets for the kitchen and bathroom. Karran manufactures sinks in a variety of durable materials including stainless steel, acrylic, quartz composite, and vitreous china. The company was founded in the late 1990s in Vincennes, Indiana, USA, and has been a symbol for quality and reliability
Karran Fusion 33" Undermount Stainless Steel Kitchen Sink with Accessories, 18 Gauge, UUMSB3321-PK1
Karran USA is one of the leading manufacturers of sinks and faucets for the kitchen and bathroom. Karran manufactures sinks in a variety of durable materials including stainless steel, acrylic, quartz composite, and vitreous china. The company was founded in the late 1990s in Vincennes, Indiana, USA, and has been a symbol for quality and reliability ever since.
Upgrade your kitchen with the sleek and durable 33" Undermount Stainless Steel Single Bowl Kitchen Sink. Expertly handmade with 18-gauge stainless steel, this modern sink offers a functional and stylish design with a 9 deep single bowl and R0 corners. Its center-rear drain maximizes both workspace and storage beneath the sink, making it the perfect addition to a busy, modern kitchen.
Please see our color disclaimer.
Features
- High-quality 18-gauge stainless steel - Precision-engineered for durability, strength, and premium corrosion resistance, offering a sleek and sturdy build for everyday use.
- Sleek Undermount Installation – Designed for undermount installation into new quartz and granite countertops.
- Spacious Single-Basin Design for Maximum Workspace – The extra-deep, wide bowl easily accommodates oversized pots, pans, and cookware, providing ample space for effortless washing and cleanup.
- Reinforced Stability with a Durable 2.5mm Deck – Built for strength and reliability, this sink features a 1.2mm stainless steel bowl paired with a reinforced 2.5mm deck, providing exceptional durability and structural support. Designed for long-lasting performance, it resists dents and warping, ensuring a solid and dependable sink solution with easy installation.
- R0 Corners for a Modern, Sharp Look – Features 90-degree R0 corners for a sleek, angular design that complements contemporary kitchens, offering a crisp, clean aesthetic.
- Center-Rear Drain – Maximizes usable space under the sink while directing water away from dishes, reducing splashing and making cleanup easier. Ideal for busy kitchens.
- Included Accessories – Includes a grooved grid for vertical drying, low-profile basket strainer, and a top mount, dishwasher-safe drying rack with suction cups to keep the mat securely in place.
- Food-Safe & Dishwasher-Safe Drying Rack – Crafted from FDA-approved food-grade silicone, this rack ensures safe, durable use and easy cleaning for a convenient, hassle-free kitchen experience.
- Low-Profile Basket Strainer – Sitting lower in the drain for a seamless look, this strainer prevents clogs without blocking water flow, offering easy cleaning and a clutter-free sink.
- Complete Installation Kit for a Precise Fit – Includes undermount hardware clips and a precision installation template, ensuring a secure, hassle-free setup with perfect alignment.
- Bowl Configuration: Single Bowl
- Corner Radius: R0 Corners
- Approximate Weight: 19 lbs.
- Pre-drilled Faucet Holes: 0
- Pre-drilled Accessory Holes: 0
- Installation Type: Undermount
- Dimensions: 33" x 18-1/4" x 9" (Overall), 31-1/2” x 16” x 8-3/4” (Bowl)
- Material: Stainless Steel
- Sink Color: Stainless Steel
- Sink Finish: Satin Brushed
- Sink Gauge: 18
- Accessories Included: Grid, basket strainer, drying rack
- Included: Mounting hardware, template
- Minimum Cabinet Width: 36”
- Drain Opening Size: 3-1/2 in. (compatible with most garbage disposals)
- Drain Placement: Center Rear Drain
- Certifications: cUPC & ISTA-6
- Warranty: Limited Lifetime
Details
| Bowl Split: | Single |
|---|---|
| Box Height: | 10.83" |
| Box Length: | 37.01" |
| Box Weight: | 37.7 lb(s) |
| Box Width: | 22.24" |
| Collection: | Fusion |
| Color: | Stainless Steel |
| Country of Origin: | Vietnam |
| Drain Placement: | Rear |
| Drain Size: | 3.5" |
| Faucet(s) Included: | No |
| Finish: | Satin Brushed |
| Gauge: | 18 |
| Installation Hardware Included?: | Yes |
| Installation Type: | Undermount |
| Item Height: | 9" |
| Item Length (Front to Back): | 18.25" |
| Item Weight: | 19.35 lb(s) |
| Item Width (Side to Side): | 33" |
| Material: | Stainless Steel |
| Minimum Cabinet Size: | 36" |
| Number of Bowls: | 1 |
| Number of Faucet Holes: | 0 |
| Overall Dimensions: | 18.25" x 33" x 9" |
| SKU: | UUMSB3321-PK1 |
| Shape: | Rectangular |
| Ship Method: | FedEx Ground |
| cUPC Certified?: | Yes |
Warranty
Limited Lifetime Warranty
Karran Warranty Details (PDF)
Installation Instructions
Installation Instructions (PDF)
Product Specifications (PDF)
Product Care
Karran Product Care (PDF)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 2369 reviews
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Product Reviews
★★★★★ 5
Great buy, especially in its price range and perhaps even beyond
Color: A-Silver
Hope not to jinx it and have to change this review in six months but I'm extremely pleased with this machine. I've gone through two DeLonghis that lasted me each 4-5 years and I've liked them a lot, but both have eventually leaked and had quirks that were never ever answered/remedied by their customer service. I bought this Casabrews on spec, after looking through all sorts of alternatives, even hand models. I read through customer reviews, including the negative ones complaining about noise, its weight (or, rather lack of), claims over shoddy materials (its plastic components), alleged issues with its wand and basket, the quality of its shots, and so on. I was concerned about buying a product from a relatively new company with a short track record. But, OTOH, there were some very positive, persuasive reviews online. I'm from a coffee-producing nation and have more of it in my veins than blood so it's an absolute daily must-have that an increasingly leaking DeLonghi wasn't going to provide for long so I was facing an emergency. That this model was on sale at Amazon was a welcome incentive since, by the same token that I know what I like in coffee and scoff at the pretentious, opinionated coffee snobishness that too often characterizes conversations over it in the US, I've never been persuaded by the fancy-schmancy high-end, pocket-gouging machines on the market.
While I've only had it for several weeks, I'm delighted with it. It's way faster than my old DeLonghis. I love that I don't have to hover over it watching to make sure it doesn't overflow because it turns itself off--and while I'm perfectly happy with the amount I'm getting without tinkering with it, it's programmable for longer shots. It's relatively quieter--noise complaints are likely from new users of espresso machines unused to their noise. It is lighter than my old machines, but the good news is that the basket fit loosens with use and a light hand on top of it solves the issue. The quibble about the basket falling from the wand seems to be more, again, about unobservant users who don't notice their design and the notch that locks the basket in place. It's also a preferable design than the wire in the DeLonghis, which would get loose and end up in our countertop compost bin when shaking out the puck. I even prefer the wetter pucks of used coffee it produces because they're way easier to scoop out of the basket than the DeLonghi's rock hard ones (even bent one of my demitasse spoons once). And, most importantly, the coffee is ABSOLUTELY FINE, even preferable to what I'd been getting from my old machines.
And, hey, if it happens to have a short life, I'll just return and revise my rating and review.
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Reviewed in the United States on June 6, 2026
★★★★★ 5
Buono...squisito!
Color: Sterling Silver, Color: Sterling Silver
Arrive and packaged very well. It is lightweight...unsure if it's metal or plastic finished to look like metal...my guess is that "parts" are the latter because the knob for the froth/steam is plastic. Nonetheless, it is well made. Moreover, the price point makes it clear it can't be a premium expresso machine. I realize this doesn't sound like a great review of this product but on the contrary it is meant to say that - it is a quality machine based in the price point. I read the manual and personalized the settings for me and I have very little critique. The 2 in 1 portafilter is quality...the water dispenser "top fill" function is good; no need to remove the unit. Frother unit works well...just wish it pulled out a little more...drip tray could be wider as it's a little difficult getting a wide-mouth cup in without taking out the main tray...not a real hassle though. All in all....it's a 9.5 in my opinion. Functions are great...easy to understand and makes a great expresso, americano, latte and variable of each 👍👍
Great deal for the price!
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Read the manual directions thoroughly to make the perfect cup.
Color: Sterling Silver
I’ve been using this machine daily for 9 weeks. I absolutely love it! It’s easy and delicious. It took about 90 minutes to thoroughly read the manual which was very helpful in making the perfect pressure crema. The machine quality is good. If it lasts several years I’ll rate it fantastic. That is tbd. It is a great value for the money and aesthetically pleasant sitting on the countertop. Love it!
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Great value
Color: Sterling Silver
Nice machine. Makes great espresso and steam wand works well and heats up fast. Just wish the porta filter was made better with wire clip to hold basket in instead of groove and dimple setup. Used grinds cant be simply tapped out as a single puck. you need to dig them out with a spoon. Not the end of the world but I was spoiled with a Breville Ive used in the past. Still would definitely recommend great unit at this price point. Makes delicious coffee
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Time btwn brews
Color: Sterling Silver
Love the sleek look and just the right size for counter top. Makes a great cup and foaming wand is great. Be sure to let first stream of water out before frothing. Definitely need a napkin or towel handy. Only one drawback I can see so far. After making an espresso it takes a bit of time to cool down before it allows you to brew next one. There’s two of us so we need to stagger our espresso making. Espresso could also be a bit hotter. All in all it’s a nice machine and does the job.
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Reviewed in the United States on December 5, 2025