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✅ Kohler K-2330-7 Interior 1-Bowl Undermount Bath Sink Black Black ✅
From the Manufacturer
Bring a modern interpretation of retro styling to the bath or powder room with the Kathryn undercounter lavatory. This rectangular sink is constructed of durable vitreous china, ensuring years of reliable performance, and is available in a palette of KOHLER colors to complement any decor.
MKES
August 18, 2025
Dropped a socket into one of these sinks and cracked it. Glad Kohler still makes this exact sink so I could replace just the sink and not have to do a whole new double sink granite countertop. Arrived fast and sturdy Kohler packaging was very protective. Nice sinks. Would put overflows opposite of faucets if I did it again so you’re not looking into the 3 holes. Plumber made that choice years ago without asking.
Avid Mac
August 16, 2025
At $300, this sink is a little pricey but if you take care of it, the sink will last many years.I was a little concerned about the drainage and possibly standing water. I think this is one of the better drainers of all the rectangular sinks out there. Plenty deep and nicely sized. It handles 8" faucet just fine.
campfamily50
August 14, 2025
We bought this sink for our kids bathroom vanity, and were so pleased with it we bought 2 more for our double vanity in our master bathroom. The clean lines of the square sink look awesome against our black granite countertop and modern chrome fixtures. While the look is great, you do have to sometimes splash extra around the corners as it is not steeply angled like a round or oval sink. However, for us it is totally worth it for the beautful clean look of these sinks.
Placeholder
June 29, 2025
Ordered this sink after returning another made in China sink that was deformed/not square, but was well packaged. This sink came to my front door and the only protection was the very thin cardboard box it came in, no foam or extra thick cardboard layers. It must be a tough sink to have arrived unscathed. The sink itself is of decent build quality except for the 3 overflow drain holes which are not evenly spaced and you can see it a mile away. So I'm going to install the sink with the drain holes towards the outside so they're not staring me in the face.
Scott Keith Mount
June 26, 2025
Great quality and detail! Arrived quick and perfect, like always.
Matt K
June 1, 2025
I have no complaints about this sink. Beautiful, classy and unique design.
Carmen G.
May 15, 2025
Beautiful.
funbear
May 6, 2025
Kohler rarely disappoints. Sure, they are more costly than most brands, but at least u get a quality product, with good support. This sink is no exception. The finish is superb, a brilliant porcelain shine, bright white. I love under mount sinks. Other than a slightly more complex install, I wonder why anyone would not use undermounts, so simple to clean up, just push water / debris in sink, no lip to contend with.I have installed all kinds of sinks, Corian, Stainless, stone, copper, marble, etc. If you can afford it, and appearance is important, these porcelain sinks (cast iron body of course) provide a universal WOW factor. Can't say the same for any other type of sink, as its a matter of taste.I also installed the Kohler kitchen model of this sink in my kitchen, and its prob. the nicest looking, and easy to clean sink I have ever used. My previous house had a white corian sink... it looks nice, but still not on par with Porcelain, and regardless of what Dupont, or any of the other solid surface maker tell u, they will stain if they are white. And they can be a bstrd to clean. Never again.OTOH, this sink cleans with a wipe, it really is non-porous. I am sure if you tried hard enough, eventually you can penetrate the surface, such as leaving dark sodas lay on the surface for extended periods of time, etc. Since phosphoric acid can eat through car paint, I am sure it will slowly etch the finish of this enamel based porcelain...how long? I have no clue. But if you take reasonable care, this finish should last 20+ years. I have seen some porcelain sinks 50 years old still shine up nice. So there is a lot of history behind porcelain sinks longevity.On the downside, it's porcelain, which is somewhat fragile. So u do have to be careful NOT to drop anything sharp and / or heavy, or the finish could crack / chip, just like a toilet can. However, they are designed to take a serious load before cracking / chipping. On the kitchen model, there is a bottom metal grate Kohler provides so pots n pans don't put excessive wear on the porcelain. If you keep the grate in place, its well protected.For a bathroom sink, generally speaking, they are not very vulnerable to the same abuse, so even more reason to go porcelain in the bahtroom. I agree with the previous poster, I would have liked a steeper slope at the bottom, but it's a small issue, possibly a design oversight... highly recommended.
Paul
May 3, 2025
Not only looks great but really functional for our bathroom. Really satisfied.
MKES
April 22, 2025
Dropped a socket into one of these sinks and cracked it. Glad Kohler still makes this exact sink so I could replace just the sink and not have to do a whole new double sink granite countertop. Arrived fast and sturdy Kohler packaging was very protective. Nice sinks. Would put overflows opposite of faucets if I did it again so you’re not looking into the 3 holes. Plumber made that choice years ago without asking.
Avid Mac
April 1, 2025
At $300, this sink is a little pricey but if you take care of it, the sink will last many years.I was a little concerned about the drainage and possibly standing water. I think this is one of the better drainers of all the rectangular sinks out there. Plenty deep and nicely sized. It handles 8" faucet just fine.
campfamily50
March 29, 2025
We bought this sink for our kids bathroom vanity, and were so pleased with it we bought 2 more for our double vanity in our master bathroom. The clean lines of the square sink look awesome against our black granite countertop and modern chrome fixtures. While the look is great, you do have to sometimes splash extra around the corners as it is not steeply angled like a round or oval sink. However, for us it is totally worth it for the beautful clean look of these sinks.
Placeholder
March 16, 2025
Ordered this sink after returning another made in China sink that was deformed/not square, but was well packaged. This sink came to my front door and the only protection was the very thin cardboard box it came in, no foam or extra thick cardboard layers. It must be a tough sink to have arrived unscathed. The sink itself is of decent build quality except for the 3 overflow drain holes which are not evenly spaced and you can see it a mile away. So I'm going to install the sink with the drain holes towards the outside so they're not staring me in the face.
Scott Keith Mount
March 9, 2025
Great quality and detail! Arrived quick and perfect, like always.
Matt K
March 6, 2025
I have no complaints about this sink. Beautiful, classy and unique design.
Carmen G.
January 31, 2025
Beautiful.
funbear
January 26, 2025
Kohler rarely disappoints. Sure, they are more costly than most brands, but at least u get a quality product, with good support. This sink is no exception. The finish is superb, a brilliant porcelain shine, bright white. I love under mount sinks. Other than a slightly more complex install, I wonder why anyone would not use undermounts, so simple to clean up, just push water / debris in sink, no lip to contend with.I have installed all kinds of sinks, Corian, Stainless, stone, copper, marble, etc. If you can afford it, and appearance is important, these porcelain sinks (cast iron body of course) provide a universal WOW factor. Can't say the same for any other type of sink, as its a matter of taste.I also installed the Kohler kitchen model of this sink in my kitchen, and its prob. the nicest looking, and easy to clean sink I have ever used. My previous house had a white corian sink... it looks nice, but still not on par with Porcelain, and regardless of what Dupont, or any of the other solid surface maker tell u, they will stain if they are white. And they can be a bstrd to clean. Never again.OTOH, this sink cleans with a wipe, it really is non-porous. I am sure if you tried hard enough, eventually you can penetrate the surface, such as leaving dark sodas lay on the surface for extended periods of time, etc. Since phosphoric acid can eat through car paint, I am sure it will slowly etch the finish of this enamel based porcelain...how long? I have no clue. But if you take reasonable care, this finish should last 20+ years. I have seen some porcelain sinks 50 years old still shine up nice. So there is a lot of history behind porcelain sinks longevity.On the downside, it's porcelain, which is somewhat fragile. So u do have to be careful NOT to drop anything sharp and / or heavy, or the finish could crack / chip, just like a toilet can. However, they are designed to take a serious load before cracking / chipping. On the kitchen model, there is a bottom metal grate Kohler provides so pots n pans don't put excessive wear on the porcelain. If you keep the grate in place, its well protected.For a bathroom sink, generally speaking, they are not very vulnerable to the same abuse, so even more reason to go porcelain in the bahtroom. I agree with the previous poster, I would have liked a steeper slope at the bottom, but it's a small issue, possibly a design oversight... highly recommended.
Paul
January 21, 2025
Not only looks great but really functional for our bathroom. Really satisfied.
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