Shallow Rectangular Ceramic Undermount Bathroom Sink with Overflow, 20.5"

This rectangular ceramic undermount basin is dimensioned as follows for countertop fabrication and repeat ordering across units.

• Mounting style: undermount, with a flat mounting rim measuring 25 mm (1.0 in) on the left and right sides
• Overall size: 520 mm by 355 mm (20.5 in by 14.0 in)
• Interior bowl opening: 470 mm by 300 mm (18.5 in by 11.8 in)
• Overall exterior height: 170 mm (6.7 in)
• Bowl profile: rectangular with rounded interior corners and walls that taper inward from rim to base
• Drain dimensions: Ø70 mm (Ø2.8 in) and Ø45 mm (Ø1.8 in) as shown
• Drain position: centered left to right (235 mm / 9.3 in), set 120 mm (4.7 in) toward the rear of the bowl
• Material: ceramic

Full dimensional drawings are available on request for fabrication and submittal review.

The basin is formed in ceramic with a smooth, wipe-clean surface suited to bathroom and washroom use. The rectangular shape and rounded interior corners support straightforward daily cleaning, while the tapered bowl walls direct water toward the centered-rear drain. Finish and color options are available on request and can be set per program for branded or specified orders.

As a shallow undermount ceramic sink, this model installs beneath the countertop using its flat mounting rim as the mounting and sealing surface, leaving a recessed edge below the counter cutout. Cutout templates and mounting detail are available on request so fabricators can size the opening and reveal before cutting slab material. The basin has no deck faucet hole, so the faucet mounts to the countertop deck or wall.

The bowl is configured without an overflow, so it pairs with a non-overflow free-flow drain rather than a standard pop-up with overflow. Match the drain to the basin's drain dimensions, Ø70 mm (Ø2.8 in) and Ø45 mm (Ø1.8 in), and confirm the selection against your faucet and trap layout when specifying.

SANIKB supports OEM and ODM production of this ceramic undermount sink for buyers building a branded or specified basin line. Customization can include finish and color, branding, and packaging configured to your program, along with dimensional or tooling adjustments scoped at the RFQ stage. Private-label ceramic basin orders ship under your brand with documentation prepared to match.

This undermount ceramic vanity basin fits a range of trade and project channels: distributors and importers stocking for resale, multifamily and hospitality programs standardizing across high unit counts, showroom dealers specifying to contractors and designers, and stone or quartz fabricators mounting basins beneath finished tops. The compact rectangular footprint and shallow profile suit secondary vanities, powder rooms, and washroom layouts where counter space is limited.

SANIKB supplies this wholesale rectangular ceramic sink factory-direct, with samples available on request for evaluation before a production order. MOQ, lead time, pricing, and export packaging are confirmed at quotation based on order volume and destination. Send your project specifications to receive a tailored quote and a documentation package matched to your program.