The right sink makes a vanity easier to live with. An undermount sink is fitted from below the countertop, so the edge stays flat and wipes clean. A drop-in sink, also called self-rimming, sits in a cutout with a visible rim and is often simpler to install.
The six sinks below split into four undermount and two drop-in models. Sizes, materials and faucet-hole details come from each product’s listing page. We have not used these sinks ourselves. Durability and finish claims are the makers’ own, and countertop cutout sizes should always be checked against the maker’s template.
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What to Look For
| Feature | Why it matters |
|---|---|
| Mounting style | Undermount needs a solid countertop; drop-in suits laminate and most tops |
| Size | Outer size must fit the cabinet and cutout |
| Faucet holes | No holes means a wall or deck-mount faucet; pre-drilled holes set the faucet type |
| Overflow | A built-in overflow channel is common but not on every sink |
| Material | Vitreous china and ceramic are glazed and easy to wipe |
Specs at a Glance
| Sink | Type and size | Material | Notes |
|---|---|---|---|
| KOHLER Caxton | Undermount; 20.31 x 15.75 in | Vitreous china | Overflow; no faucet holes; one year limited warranty |
| DeerValley 21 x 15 | Undermount; 21.06 x 14.72 in | Ceramic | Overflow basin; 8.35 in tall |
| KOHLER Verticyl 17 | Undermount; 17.1 x 13.38 in | Porcelain | Vertical sides; overflow; no faucet holes |
| Ruvati 21 x 14 | Undermount; 21 x 14.5 in | Ceramic | Rear drain; mounting clips and template; pop-up drain not included |
| KRAUS Elavo | Drop-in; 20.5 x 17.88 in | Vitreous china | Bowl 16 3/8 x 11 in; rear-set drain; cutout template |
| Design House | Drop-in; 20.3 x 17.5 in | Vitreous china | 4 in centerset holes; bowl depth 7.5 in |
The 6 Best Bathroom Sinks for Vanities
1. KOHLER Caxton Rectangle Undermount Sink
A white vitreous china rectangle that measures 20.31 by 15.75 inches and stands 7.33 inches tall. It has an overflow drain and no faucet holes, so it needs a wall-mount or counter-mount faucet. The listing shows a one year limited warranty.
Suits: a flat-edged look under a solid top. Strengths: a plain rectangle and an overflow. Weaknesses: no faucet holes, and the listing gives no size entry. Skip it if you want a drop-in sink.
View KOHLER Caxton Rectangle Undermount Bathroom Sink White on Amazon
2. DeerValley Undermount Sink 21 x 15
A white ceramic undermount rectangle with a glazed finish, listed at 21.06 by 14.72 inches and 8.35 inches tall. The maker describes the surface as resistant to scratches, stains and chips. The title says 21 by 15 inches, so check the exact cutout size before ordering.
Suits: a larger basin under a stone or solid top. Strengths: generous size and an overflow. Weaknesses: the title and the listed size differ slightly. Skip it if your cabinet is narrow.
View DeerValley Undermount Bathroom Sink White Rectangle 21 x 15 on Amazon
3. KOHLER Verticyl 17 in Undermount Sink
A small porcelain undermount with vertical sides, listed at 17.1 by 13.38 inches and 7.21 inches tall. It has an overflow drain and no faucet holes, so it takes a wall-mount or counter-mount faucet.
Suits: small vanities and powder rooms. Strengths: compact and deep for its footprint. Weaknesses: no faucet holes. Skip it if you want a wide basin.
View KOHLER Verticyl 17 in Undermount Bathroom Sink White on Amazon
4. Ruvati 21 x 14 Undermount Sink
A thick ceramic undermount listed at 21 by 14.5 inches and 8.25 inches tall. The rear drain lines up with the faucet spout, which the maker says frees cabinet space. Cutout templates and mounting clips are included. A pop-up drain is not.
Suits: a do-it-yourself undermount install. Strengths: clips and templates included. Weaknesses: the pop-up drain is sold separately. Skip it if you want every part in the box.
View Ruvati 21 x 14 Rectangular Undermount Bathroom Sink White on Amazon
5. KRAUS Elavo 20.5 in Drop-In Sink
An oval vitreous china drop-in with outer dimensions of 20.5 by 17.88 inches and 7.5 inches tall. The bowl measures about 16.4 by 11 inches and 5.5 inches deep. A sloped bottom, overflow and rear-set drain are listed, along with a cutout template and installation manual.
Suits: a simple top-mount install on most tops. Strengths: template included and a sloped bowl. Weaknesses: a visible rim. Skip it if you want a flat edge.
View KRAUS Elavo 20.5 in Oval Drop-In Bathroom Sink White on Amazon
6. Design House 20 x 17 Drop-In Sink
A white vitreous china self-rimming sink. The bullets give 20.3 by 17.5 inches with a 7.5 inch bowl depth, while the details field lists 17 by 17 by 7.9 inches, so the sizes conflict. It has pre-drilled 4 inch centerset faucet holes and a one year limited warranty.
Suits: a classic centerset faucet. Strengths: pre-drilled holes. Weaknesses: conflicting size entries. Skip it if you need an exact cutout without measuring.
View Design House Single Bowl Drop-In Bathroom Sink 20 x 17 White on Amazon
Care and Setup
- Use the maker’s template to mark the cutout.
- Check the faucet holes before choosing a faucet.
- Seal the rim or edge as the maker directs.
- Wipe glazed surfaces with a soft cloth and mild cleaner.
Mistakes to Avoid
- Buying a sink without measuring the cabinet.
- Pairing a no-hole sink with a deck-mount faucet.
- Forgetting a separate drain if one is not included.
- Using an undermount sink in a top that cannot support it.
Bathroom Sink FAQ
Undermount or drop-in?
Undermount gives a flat edge but needs a solid top. Drop-in is easier to fit and works with more tops.
Do these include a faucet?
No. Faucets are sold separately, and some sinks have no holes at all.
The Short Version
For a plain rectangle, the KOHLER Caxton. For a wide basin, the DeerValley. For a compact fit, the KOHLER Verticyl. For clips and templates, the Ruvati. For an oval drop-in, the KRAUS Elavo. For centerset holes, the Design House.
