20-Inch Rectangular Ceramic Undermount Vanity Sink with Overflow

• Model: SN018
• Overall size: 20.1 in x 15.2 in x 7.5 in (510 x 385 x 190 mm)
• Bowl top opening: 18.1 in x 13.2 in (460 x 335 mm)
• Overall basin depth: 7.5 in (190 mm), measured to the outside of the basin
• Mounting flange width: 1.0 in (25 mm)
• Drain opening: 1.8 in (45 mm), with a 2.8 in (70 mm) drain seat recess
• Material: ceramic
• Color: white
• Mounting style: undermount

The 18.1 in x 13.2 in (460 x 335 mm) top opening sets the reference for the countertop cutout, while the 1.0 in (25 mm) flange seats against the underside of the counter. Interior usable depth is shorter than the 7.5 in (190 mm) exterior figure, since that measurement is taken to the outside of the basin and includes the wall. Detailed templating dimensions are available on request for fabrication planning.

The SN018 is a white ceramic undermount basin with a smooth glazed surface. Ceramic holds color consistently across production runs, which gives buyers a uniform white tone for reorders and matched installations within a project. White is the confirmed finish for this model. Material grade and any further finish details are confirmed at quotation.

As a rectangular undermount bathroom sink, the SN018 mounts beneath the countertop and is secured with mounting clips and adhesive against the 1.0 in (25 mm) flange. The faucet is deck-mounted in the countertop or vanity, since the basin itself carries no faucet holes. The basin has no overflow and a single 1.8 in (45 mm) drain opening, set toward the rear at 4.9 in (125 mm) from the back edge. It pairs with a non-overflow free-flow drain rather than a standard pop-up with overflow. Drain hardware and cutout templates are provided on request to suit your fabrication and plumbing specifications.

The SN018 works as a single specified basin across high-volume programs, with a fixed cutout reference that keeps fabrication repeatable from job to job. Multifamily and residential developers can standardize one lavatory across a build to control per-unit cost and simplify installation. Hospitality FF&E buyers can hold a consistent appearance across floors and room types, with replacement availability arranged for ongoing maintenance. Showroom dealers, general contractors, and countertop fabricators gain a predictable rectangular basin they can template once and reorder with confidence.

SANIKB supplies the SN018 as a factory-direct OEM and ODM partner. Private-label buyers can run the basin under their own brand, with packaging and branding set per program. Custom requirements, branded cartons, and program documentation are confirmed at the RFQ stage based on volume and program needs. This gives private-label brands and OEM sourcing managers control over how the rectangular ceramic vanity basin reaches their own customers.

SANIKB ships the SN018 to North American and global B2B buyers directly from the factory. Export packaging, freight planning, and per-container loading can be coordinated to support distributor stocking and project delivery. Minimum order quantity, lead time, and pricing for this undermount ceramic sink are confirmed at quotation and set per program. Send your project specifications and volumes to receive a quote built around your requirements.