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The Karran Q-309 is a single-bowl quartz undermount vanity sink in White, sized at 20 inches wide by 14 inches deep for bathrooms and vanities built around a 24-inch or wider cabinet.
Undermounting keeps every edge of the bowl hidden beneath the countertop surface, so what you see from above is an unbroken field of counter material with a smooth drop into the white basin. White is one of the most versatile vanity colors precisely because it reads as neutral against light stone, pale laminate, or bright tile without competing for attention. This sink brings that clean-line look to a straightforward single-bowl vanity setup where the counter does the talking and the sink just works.
The Q-309 is made from quartz composite, an engineered material that blends crushed quartz with resin to produce a solid, dense basin. The White finish carries through the full body of the material, not just a surface coating, so chips and nicks do not expose a different color underneath. The quartz composite surface is non-porous, which makes it resistant to the staining and moisture absorption that plain ceramic or coated finishes can develop over years of daily use in a bathroom environment.
At 20 inches wide by 14 inches deep, this sink fits naturally into a single-sink vanity on a 24-inch or wider cabinet. It is sized for bathroom vanities rather than kitchen use, making it a practical specification for a primary bath, a guest bath, or a powder room remodel where the vanity is being replaced or updated. Because it undermounts, it is best planned into a new countertop fabrication. It works with laminate, solid surface, and granite counters, covering both budget and premium vanity builds in the same product. Designers specifying multiple baths in a project and cabinet shops building vanity units will find the dimensions straightforward to work with.
Undermount sinks are designed to be set into the underside of the countertop during fabrication. If your existing counter already has a different cutout or was made for a drop-in sink, this sink is best suited to a new countertop or a full counter replacement rather than a swap-in retrofit.
The Q-309 is designed for laminate, solid surface, and granite countertops. If your vanity top is a different material, confirm compatibility with your fabricator before ordering.
No. The Q-309 is not ADA compliant. If accessibility compliance is a project requirement, look for a sink specifically rated for it.
The drain opening is 1-3/4 inch, which accepts standard bathroom drain assemblies. Drain hardware is sold separately.
The Karran Q-309 in White pairs the practical single-bowl vanity format with an undermount quartz body that stays clean, installs cleanly, and holds its finish through years of bathroom use.
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