Undermount Bathroom Sinks

For more than two decades, Signature Hardware has provided beautifully crafted products that make a house your home. From the kitchen to the bathroom - and every room in - between your Signature style starts here. At Signature Hardware, we do things the right way. When you find a product that compliments your style, we'll make every step of the process as seamless and worry-free as possible. We stand by our quality, value customer service, and ensure your satisfaction. That's our promise to you.

[This review was collected as part of a promotion.] Love this bathroom vanity sink. It's a great size and great quality. Client is happy!. Mc. Thu Jan 15 2026

Cotton

Created with modern simplicity, this lavatory offers a beautifully rimless, rectangle design. Features a generously wide basin, and large backsplash.

1st sink we received was broken in half and sharp pieces of porcelin. Wayfair still insisted on me returning it which was odd considering how dangerous I thought it was. Wayfair did make it right and shippped the new sink to me quickly. The second sink arrived in perfect condition. Looks great in our vanity with our quartz top.. Karen. Burbank, CA. Sat Nov 15 2025

White

These sinks are just what our bath vanity needed. The are rectangles and deeper than the standard sink!. Armando. Palm Beach Gardens, FL. Fri May 01 2026

Transform your bathroom into a luxurious oasis with our 18" wide white vitreous china rectangular undermount bathroom sink. Offering a seamless blend of style and functionality, this sink is a must-have addition to modern bathrooms. Its clean lines and crisp white finish effortlessly complement any decor, while the undermount design creates a polished, integrated look. Crafted from premium vitreous china, this sink is not only stunning but also built to withstand the test of time. Non-porous surfaces are easy to clean and maintain. Complete with an overflow hole for added convenience, it's the perfect choice for discerning homeowners seeking both beauty and practicality.

Standard Undermount sink. I like the fact that it doesn’t have corners where things get stuck and it’s easy to clean.. Matthew. Oakland, CA. Sun Apr 19 2026

This undermount bathroom sink is crafted with durable solid ceramic, low water absorption, smooth and polished surface, very resistant to scratch and stains, easy to keep clean. The rectangular sink can stand up to chipping and keep as pure white as new even after years of use.

Lydia. Oakville, ON. Wed Mar 11 2026

Matte White

This 25.2-inch rectangular undermount ramp sink from Badeloft features a slope-to-drain design. The ramp basin slopes gently toward the drain, so water flows out completely without pooling. Stone resin is non-porous, meaning it won't stain or absorb moisture over time. Includes mounting hardware for undermount installation. Backed by a 10-year residential warranty.

Nice and sleek design, it is a brighter white than I hoped but I’m still keeping it. I know the ramp design has mixed reviews so I’ll report back after some use.. Mj. Thu Mar 19 2026

The Boylan undermount bathroom sink has a rectangular bowl that features rounded corners and walls. Made of durable, white-enameled porcelain, this basin's glossy surface is easy to clean and maintain. A thin overflow hole near the rim catches overrun water, redirecting it to the drain below.

I bought Signature Hardware Boylan 20" Porcelain Undermount Bathroom Sink Very good!. Chuck. Fri Feb 27 2026

Gold

Build a bold bathroom with the Ariaso collection from Ruvati. Stepping away from traditional porcelain, this collection offers modern, stylish sinks that will make your bathroom truly unique. From typical stainless steel to shades of gold and black, these sinks feature an innovative nano-PVD finish that is resistant to wear and abrasion. The Ariaso collection can be useful in both residential and commercial properties. Multiple installation options and arc-shaped bowl adds a beautiful, modern touch to the sink and provides exceptional drainage. To truly transform your bathroom space, experience the Ariaso collection.

Beautiful finish. We have had it installed in our showroom for over a year and it still looks perfect. Lori. Auburn, MA. Mon Feb 02 2026

Gloss White

The Barcelona collection of sinks follows the organic oval silhouette of the Barcelona bath. Pebble-shaped perfection, the Barcelona marries symmetrical subtlety with stand-out style for a timeless look to match any décor. Whether partnered with the Barcelona bathtub, paired as his and hers sinks, or simply on its own, this vessel’s shape and simplicity are made for all spaces and designed for all times.

Quality of the sink is great can’t ask for more. Delivery time was on the spot.. Anonymous. Sat Feb 07 2026

Slate

Fall in love instantly with NativeStone's smooth surface and elegant design. A clean, oval shape shows off the organic beauty of concrete at a much lighter weight and with no-fuss maintenance. NativeStone concrete sink is handcrafted by NativeStone, an innovative, powerful blend of cement and jute fiber that is surprisingly lightweight for concrete, extraordinarily heavy-duty in the bathroom, and refreshingly easy for clean-up.

Fabulous looking sink - with great quality. Natural tone color works great with our wood tone cabinets and white quartz counter. Was very surprised on how good the quality & finish on sink . Oval Sink became the focal point of the bathroom.. John. Oradell, NJ. Mon Nov 10 2025

This classic under-mount sink is the perfect accompaniment to a wide range of vanity tops, thanks to its classic oval shaping. Made of nonporous porcelain, this sink is easy to clean and will long retain its glossy appearance.

We needed a replacement sink quickly as ours broke and they quickly sent it to us. Fits well. Jennifer. Miami Beach, FL. Tue Aug 01 2023

Cotton

Update the master bath or powder room in sleek style with this undermount sink, crafted from vitreous china and featuring a smooth gloss finish.

Great price. Kimberly. Clarkston, MI. Wed Jan 21 2026

Constructed of thick, solid porcelain ceramic, the Krona collection from Ruvati offers undermount bathroom sinks that fit seamlessly into your vanity. For superior strength and long lasting durability, the vitreous porcelain enamel forms a smooth glossy surface that is extremely resistant to scratching, chipping or crazing. The smooth surface of the Krona collection drains water easily and does not stain, so your sink will remain dry and easy to clean. For a classic look that will never go out of style, choose the Krona collection for your bathroom or powder room vanity.

Sink is great. Unfortunately one came totally damaged in pieces but Wayfare replaced it without any questions asked. The replacement came in perfect condition.. Vera. Chagrin Falls, OH. Tue Mar 24 2026

Concrete

The Lexicon LP-V330 Rectangle Bathroom Vanity Sink are constructed from 80% natural quartz composite, creating an incredibly durable sink surface. Granite Composite has the smooth feel of stone with superb sound-absorption properties and provides maximum protection against heat, scratches and stains. Lexicon Sinks are backed by a limited lifetime warranty.Sink Features:80% Quartz Composition, Only Diamond is HarderHeat Resistant up to +500°FDurable, Scratch & Stain ResistantNon-Porous, Easy-To-Clean SurfaceDual-Mount Rim for Undermount and Drop-In Installation19-7/8" x 15-3/4"Drains and Overflow Kits Sold SeparatelyDiscover Quartz Vanity Bathroom Sink and functionality with the Lexicon Platinum Quartz Vanity Bathroom Sink available in 5 Color LP-V330-K Black,LP-V330-W White, LP-V330-M Mocha, LP-V330-C Concrete, LP-V330-B Beige

Great Color! Pairs great with my new counter top. I would buy this item again and highly Recommend.. Valerie. Missouri City, TX. Tue Jan 06 2026

White

White Ceramic Rectangular Undermount Bathroom Sink with Overflow provides a refined look for your bathroom decoration. Its spacious rectangular design perfectly combines classic style and versatility, making it an excellent choice to complement traditional and modern bathrooms. This undermount bathroom sink is made from vitreous china, making it sturdy, durable, and effective against stains and germs. Undermount installation saves more space on your countertop, meeting your space requirements. An overflow hole can prevent excessive water filling.

This sink is just what I was looking for, simple design, not too big, not to small. Perfect for my remodeled bathroom.. Amy. Jackson, MS. Thu Mar 12 2026

Brushed Gold

Build a bold bathroom with the Ariaso collection from Ruvati. Stepping away from traditional porcelain, this collection offers modern, stylish sinks that will make your bathroom truly unique. From typical stainless steel to shades of gold and black, these sinks feature an innovative nano-PVD finish that is resistant to wear and abrasion. The Ariaso collection can be useful in both residential and commercial properties. Multiple installation options and arc-shaped bowl adds a beautiful, modern touch to the sink and provides exceptional drainage. To truly transform your bathroom space, experience the Ariaso collection.

Beautiful sink! The color is perfect. Shape is unique. Very well priced!. Brett. Sat May 18 2024

Gold

The Karran CCU400 enriches the Cinox Collection with its distinct tapered rectangular silhouette, finished in a luxurious finish. This undermount sink marries the artisanal charm of its finish with the crisp, modern lines of its shape. Crafted from durable T-304 stainless steel, it stands up to the rigors of daily use while maintaining its sophisticated appeal. The sink's dimensions, L 23-5/8 x W 15-3/4 x H 5-1/8 inches, offer an expansive basin area that is as functional as it is beautiful and suitable for a range of bathroom sizes and styles. The under-mount installation allows for a seamless counter-to-sink transition, underscoring Karran's commitment to sleek, unobtrusive design.

The stainless steel sink is a good quality and not flimsy as I worried it might be. The finish quality is lovely and I expect maintenance to be simple. I would recommend. The manufacturer says cleaning can be done with most traditional cleaning products however, rubbing Should be done with the grain of the Brushed finish.. Bette. WY. Thu Apr 10 2025

Eirene was the Greek goddess of peace and, like its namesake, the Eirene under-mount sink adds a touch of serenity to a bathing sanctuary. Shaped out of gentle slopes and rounded curves, the Eirene lacks hard edges and brings a sense of harmony to the space. An exceptionally smooth feel, like that of stones in a Zen garden, coupled with the cool, calming white of its surface enhances the soothing sense of tranquility and transforms the bathroom into a spa.

Beautiful sink! Exactly what I was looking for. The finish is really beautiful. We have not installed the sinks yet as our countertops are not ready but I will update with photos once installed.. Aaron. Ransom Canyon, TX. Mon Dec 08 2025

The Eden Bath Purple Reflections Oval Above Counter Tempered Glass Vessel Sink features a turquoise colored interior. The exterior foils create a textured appearance with an intermix of colors in the sink bowl so each sink has slight color variations. This sink is oval shaped and made of high quality tempered glass. We recommend that you also purchase a mounting ring and drain with your glass sink in the same finish of your faucet.

Create a clean and contemporary look in your bathroom with the streamlined undermount bathroom sink design of Elavo Ceramic Bathroom Sinks from Kraus. Made from high-quality vitreous china, these sinks offer the simple and timeless aesthetic of porcelain enamel, with durable construction for everyday use. The high-gloss porcelain glaze with a smooth non-porous finish is stain resistant and easily wipes clean. Undermount bathroom sink installation creates a seamless transition between sink and countertop, with no exposed mounting deck, allowing you to easily wipe water into the sink when cleaning your bathroom sink vanity. An overflow drain helps prevent the sink from overflowing while the primary drain is closed. Standard US drain opening is compatible with most plumbing fittings

These are stylish and elegant, perfect size and shape for our vanity.. Scott. Fri Apr 24 2026

This undermount bathroom ceramic sink offers a sleek and easy-to-clean design. Made of premium ceramic, this sink exhibits low water absorption and excellent resistance to acids, ensuring long-lasting durability. With its rectangular shape, this undermount sink is perfect for center placement on your vanity countertop. The smooth and polished surface is resistant to stains and can be easily maintained. Designed for under-counter installation, it seamlessly integrates with your countertop, creating a sleek and cohesive look.

Exactly what I was looking for. Can’t wait to install it.. Susan. LA. Sat Nov 15 2025

Constructed of thick, solid porcelain ceramic, the Krona collection from Ruvati offers undermount bathroom sinks that fit seamlessly into your vanity. For superior strength and long lasting durability, the vitreous porcelain enamel forms a smooth glossy surface that is extremely resistant to scratching, chipping or crazing. The smooth surface of the Krona collection drains water easily and does not stain, so your sink will remain dry and easy to clean. For a classic look that will never go out of style, choose the Krona collection for your bathroom or powder room vanity.

Love the quality and perfect size for my vanity! Thank you. Anonymous. Tue Apr 28 2026

Undermount vessels in perfect size ratios, these fit right inside the specialty crafted openings of our granite counter collections. In extra durable enamel and color match tones, Ilum undermount units are completely functional, simple and easy to install. Featuring an organic outline, they serve as the suitable undermount for marble top space configurations.

My small bathroom required a narrow vanity and a sink to match. This fit the bill while still having adequate depth. Very happy with it.. Thomas. Medford, MA. Fri Jan 26 2024

White

Embrace a sophisticated look with Verticyl, featuring vertical sides for a deep, geometric rectangular basin. An under-mount installation seamlessly integrates this sink into your bath or powder room design. It features an overflow drain and Undermount installation.

Nice, but was quite small. I didn't pay close enough attention to size. M. Mukilteo, WA. Sat Mar 07 2026

The TOTO® 20 Inch Rectangular Undermount Bathroom Sink with CEFIONTECT features a modern shallow basin that is ideal for narrow countertops. It features a sleek rimless design and is made with durable vitreous china for long-lasting beauty. This sink is coated with TOTO's CEFIONTECT glaze that prohibits mold and debris from adhering to ceramic surfaces. This technology helps keep your sink cleaner for longer and reduces the number of harsh chemicals used for cleaning. Included: Sink, installation template, and mounting screw set for wood countertops. Purchase separately: Compatible faucet and drain. Mounting assembly THU410 is required for marble/granite type countertop installation and must be purchased separately.

I love this sink. I put it in four different bathrooms.. Erin. Redwood City, CA. Fri Feb 13 2026

White

The great point ceramic rectangular undermount bathroom sink with overflow provides a sophisticated look to your bathroom. It has a contemporary style that complements the existing bathroom decor. This sink is made from ceramic, which makes it sturdy and durable. It is available in an exquisite finish that adds to its style quotient. It has a rectangular design that makes it perfect for center placement. The great point ceramic rectangular undermount bathroom sink with overflow from Nantucket sinks makes a fine addition to your bathroom. This sink can be easily wiped clean using a soft dry cloth. This ensures easy maintenance and keeps it looking good for a long time.

Difficult size to find and y'all had it!!. K. Milton, FL. Wed Feb 18 2026

Modern Bathroom Undermount Sink - Best Sleek European inspired modern contemporary classic design, arc beautiful, elegant and generous. This white undermount sinks are widely used in home bathroom, restaurant, Office building, school, indoor or outdoor.

Oil Rubbed Bronze

Subtle yet timeless, our nickel-plated copper sinks combine the old-world charm of hand-hammered copper with the sleek and modern sensation of nickel. The unparalleled beauty and versatility are truly a sight to behold and sure to stand out in any space.

Great Quality sink - The finish is very pretty. Anonymous. Palm Beach Gardens, FL. Tue Jan 09 2024

Biscuit

This sink works perfectly with our granite countertop. Unlike other sinks, the drain is placed directly under the faucet so the drain stopper is continually rinsed.. Thomas. Anchorage, AK. Sat Nov 22 2025

White

The Oval Undermount Sink is a great choice for those who want a flush fit basin under their countertop

Hard to find size. Worked for my needs. There’s one thing that’s not shown in the product description and that is that the overflow hole is placed off centre across the drain. Not a big deal, but i though should be in the product description. Shipping was fast and the product was well packaged.. Milena. MB. Sun Dec 07 2025

Stainless Steel

The Cinox Collection's CCU100 undermount bathroom sink is a blend of sophisticated design and practical functionality. This round sink, finished in a refined finish, adds a touch of warmth and luxury to any residential bathroom. As part of the esteemed Cinox Collection, it is crafted from high-grade T-304 stainless steel, ensuring durability and a lasting, elegant appearance. The sink's dimensions, L 15-3/4 x W 15-3/4 x H 4-3/4 inches, make it a versatile choice for a variety of bathroom styles. Designed for undermount installation, the CCU100 offers a seamless look that is both stylish and space-efficient. It includes a convenient pop-up drain, enhancing functionality and simplifying the installation process. Ideal for those who seek a blend of contemporary aesthetics and practicality, the CCU100 is a testament to Karran's commitment to excellence in bathroom fixture design.

Beautiful look in my powder room! Love it! However I keep a micro cloth On the counter and wipe the sink after use to Keep water spots from showing after use. The look out ways the water spots!. Joann. Boca Raton, FL. Tue Apr 21 2026

Boasting a timeless elegance, this bathroom sink is crafted from premium materials for both durability and style. Its generous basin offers ample space for daily hygiene routines, while the sleek contours and cleverly designed drain ensure a seamless and efficient user experience, keeping your bathroom clean and organized.

Sleek, high-gloss rectangular sink crafted from durable, non-porous white porcelain with a baked-on glaze for effortless cleaning. Slim profile maximizes counter space. Fits cabinets 25½″ with a 1¾″ drain opening (pop-up drain not included). Includes two overflow caps in Polished Chrome & Matte Black. cUPC-certified and backed by a limited lifetime warranty

Beautiful sink. The glossy finish is very nice. It was packaged very well and arrived perfect.. Kevin. Houston, TX. Mon Mar 14 2022

White, 21" L x 14" W

Elevate your bathroom vanity with this premium rectangular undermount bathroom sink, the perfect blend of seamless style, hygienic design, and long-lasting durability for master bathroom remodels, guest bath overhauls, powder room refreshes, and rental property upgrades. This under-counter vanity basin is crafted from high-temperature fired porcelain with a smooth non-porous high-gloss glaze, delivering exceptional stain resistance, effortless daily maintenance, and a sleek seamless look that eliminates hard-to-clean gaps between the sink and countertop. Its timeless bright white minimalist design seamlessly complements modern, farmhouse, minimalist, and transitional bathroom decor styles, instantly upgrading the aesthetic and functionality of your bathroom while creating a more hygienic, easy-to-clean space for your household.

I love this sink because it is large and deep. Very clay with my quartz countertop and Wayfair vanity base. In love!. Leann. US. Mon Aug 12 2024

Gunmetal Black

Build a bold bathroom with the Ariaso collection from Ruvati. Stepping away from traditional porcelain, this collection offers modern, stylish sinks that will make your bathroom truly unique. From typical stainless steel to shades of gold and black, these sinks feature an innovative nano-PVD finish that is resistant to wear and abrasion. The Ariaso collection can be useful in both residential and commercial properties. Multiple installation options and arc-shaped bowl adds a beautiful, modern touch to the sink and provides exceptional drainage. To truly transform your bathroom space, experience the Ariaso collection.

These sinks are great, highly recommend!. Marilyn. Cincinnati, OH. Fri Mar 06 2026

White

Add elegance to your bathroom with this porcelain under-mount sink. This sink will give your bathroom décor a unique touch. Perfect for smaller spaces

Perfect size for my 24 x 20 vanity. Leaves plenty of counter space. Great quality. Barbara. Louisville, KY. Mon Jun 07 2021

The white rectangular under-mount bathroom sink features a smooth, glossy interior. Made of porcelain, this product offers plenty of room to wash up.

Attractive. Exactly as expected.. Cascadesteve. Thu Aug 01 2024

Mocha

The Lexicon Quartz LP-V210 oval vanity sinks are constructed from 80% natural quartz composite, creating an incredibly durable and hygienic sink surface. Easy to clean and food-safe, granite composite has the smooth feel of stone with superb sound-absorption properties and provides maximum protection against heat, scratches, and stains. A limited lifetime warranty backs Lexicon quartz sinks. Sink features: 80% quartz composition, only diamond is harder heat resistant to +500 f durable, scratch & stain resistant hygienic, easy-to-clean surface available in 5 popular colors dual-mount rim for undermount and drop-in installation.

I have not installed the sinks yet, but they look very nice. I plan to mount them on a coffee brown granite, and expect them to look terrific.. Joyce. Knoxville, TN. Tue Aug 19 2025

Create a clean and contemporary look in your bathroom with the streamlined undermount bathroom sink design of Elavo Ceramic Bathroom Sinks from Kraus. Made from high-quality vitreous china, these sinks offer the simple and timeless aesthetic of porcelain enamel, with durable construction for everyday use. The high-gloss porcelain glaze with a smooth non-porous finish is stain resistant and easily wipes clean. Undermount bathroom sink installation creates a seamless transition between sink and countertop, with no exposed mounting deck, allowing you to easily wipe water into the sink when cleaning your bathroom sink vanity. An overflow drain helps prevent the sink from overflowing while the primary drain is closed. Standard US drain opening is compatible with most plumbing fittings

Love this sink… purchasing two more. Dawn. NY. Fri Nov 14 2025

This undermount bathroom sink is made from high-quality white ceramic material, using premium glaze with high-glossy finish , low water absorption, easy to keep clean.

White

Rectangular vitreous ceramic lavatory single-bowl undermount 20" x 15" x 7-1/2"

Cracked within the first year.. Albania. Waxhaw, NC. Thu Nov 27 2025

Gray

The Karran CCU300, a part of the esteemed Cinox Collection, brings a modern twist to bathroom elegance. This rectangular undermount bathroom sink, in a captivating finish, seamlessly blends style with functionality. Made with durable T-304 stainless steel, it assures both longevity and a consistently polished look. Measuring L 21-5/8 x W 15 x H 5-1/8 inches, the sink is perfectly sized for various bathroom layouts, offering spaciousness without compromising on design. The under-mount setup of the CCU300 provides a neat, flush fit with the countertop, creating a sleek and uncluttered aesthetic, synonymous with Karran's commitment to superior design and quality.

Nisim. Iva, SC. Wed Jan 28 2026