Undermount Bathroom Sink 21 x 15 in Rectangular Vessel Sink - Clean

In this review we look at the Sarlai undermount bathroom sink and why it makes sense for medium bathrooms and remodeled vanities. The bottom line: this rectangular ceramic sink is best for buyers who want a deep, easy-to-clean basin that installs beneath the countertop for a seamless, integrated appearance. The review focuses on durability from high-temperature firing, the fit for common countertop cutouts, and the simple installation that comes with mounting clips and instructions.

Key Features

• Undermount design: Creates a clean, continuous counter edge and a more integrated look that hides the sink rim beneath the countertop for easier cleaning.
• Durable ceramic construction: Fired at high temperature for low water absorption, the sink resists wear and keeps a like-new glazed surface over time.
• Generous interior depth: The deep interior bowl accommodates everyday tasks without excessive splashing and suits medium-sized bathrooms.
• Included mounting hardware: Mounting clips and instructions are supplied to simplify the under-counter installation process.
• Standard drain compatibility: The basin is sized to accept a 1-3/4 in drain which fits common bathroom drain assemblies.

Who It's For

This sink is ideal for homeowners updating a medium bathroom vanity who want a modern rectangular shape and a deep basin for practical use. It also suits contractors or renovators who need a durable ceramic undermount sink that pairs well with stone or solid-surface counters.

Shoppers who need a faucet or drain included should look elsewhere because this listing does not include those items. Those with very small vanities should verify the exterior footprint of roughly 21-1/3 in by 15-3/8 in before purchasing to ensure proper fit.

Pros & Cons

Pros

• Well-made ceramic construction holds up after long use and retains a bright white glazed finish.
• Deep interior bowl and rectangular shape provide practical space for washing and match craftsman or modern styles.
• Undermount installation gives a seamless counter connection and a clean, integrated look.
• Customers report the sink is a good value and fits retrofits into older vanities.

Cons

• Faucet and drain set are not included, so buyers must purchase those separately and confirm drain compatibility.
• The size may be too large for very small vanities; verify dimensions before ordering.

Specifications

Brand	Sarlai
Exterior size	21-4/9 in x 15-3/8 in x 8-1/4 in
Interior bowl size	19-2/9 in x 13-1/9 in
Installation style	Undermount
Suitable drain size	1-3/4 in
Material	High-temperature fired ceramic
Package includes	Mounting clips and instruction

Our Verdict

The Sarlai undermount rectangular sink is a sensible choice for remodels and medium bathrooms because it combines a durable glazed ceramic finish with a deep, practical interior and an integrated undermount profile. It represents solid value for buyers who will supply their own faucet and drain and want a clean, retrofit-friendly basin that will keep looking new.

Frequently Asked Questions

Does the sink come with mounting hardware?
Yes, mounting clips and installation instructions are included in the package.

Is a drain or faucet included?
No, the faucet and drain set are not included; the sink accepts a 1-3/4 in drain.

Will this fit a standard vanity?
It fits most medium vanities but confirm the exterior footprint of 21-4/9 in x 15-3/8 in to ensure proper installation.