Bathroom Undermount Sink - Products
A bathroom undermount sink mounts beneath the countertop, leaving a smooth, rimless edge that wipes clean straight into the bowl — the reason undermount basins are a favorite with granite, quartz and solid-surface vanity tops. Moonshine Bath stocks oval, rectangular and square undermount bathroom sinks in durable vitreous china and other materials, in white, biscuit, black and on-trend neutrals to suit any vanity.
Undermount sinks pair with deck- or counter-mounted faucets, so check your faucet drilling before ordering. Each sink ships free across North America, dispatches within 24 hours on weekday orders before 2 PM EST, and carries our price match + 10% beat guarantee. Building or renovating at scale? Ask about trade-pro pricing.
18.25 x 15.25 in White Oval Ceramic Bathroom Undermount Sink, CSA Certified - NZDYL
18.25 x 15.25 in White Oval Ceramic Bathroom Undermount Sink, CSA Certified - NZRTH
16.5 x 13.25 in White Oval Ceramic Bathroom Undermount Sink, CSA Certified - NZDYM
16.5 x 13.25 in White Oval Ceramic Bathroom Undermount Sink, CSA Certified - NZRTG
21.5 x 14.63 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZSK1
21.5 x 14.63 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZSK2
16 x 16 in Biscuit Round Ceramic Bathroom Undermount Sink, CUPC Certified - NZQIT
18.13 x 15.13 in White Oval Ceramic Bathroom Undermount Sink, CUPC Certified - NZSP4
19.5 x 16.25 in White Oval Ceramic Bathroom Undermount Sink, CUPC Certified - NZEY
19.5 x 16.25 in White Oval Ceramic Bathroom Undermount Sink, CUPC Certified - NZRTT
19.5 x 16.25 in Biscuit Oval Ceramic Bathroom Undermount Sink, CUPC Certified - NZEZ
20.75 x 14.35 in Biscuit Rectangle Ceramic Bathroom Undermount Sink, CSA Certified - NZDYN
20.75 x 14.35 in White Rectangle Ceramic Bathroom Undermount Sink, CSA Certified - NZDZ8
18 x 11.5 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZOIA
20 x 15.75 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZPXG
14.3 x 14.3 in White Round Ceramic Bathroom Undermount Sink, CUPC Certified - NZQIS
18.25 x 13.5 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZQIV
18.25 x 13.5 in Biscuit Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZQIW
20 x 15.75 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZPXH
14.3 x 14.3 in White Round Ceramic Bathroom Undermount Sink, CUPC Certified - NZA4
18.25 x 13.5 in White Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZEW
18.25 x 13.5 in Biscuit Rectangle Ceramic Bathroom Undermount Sink, CUPC Certified - NZEX
19.5 x 16.25 in Biscuit Oval Ceramic Bathroom Undermount Sink, CUPC Certified - NZRTV
Frequently Asked Questions
What countertops work with an undermount sink?
Undermount sinks work best with solid countertops like granite, quartz, marble and solid surface, which can hold the sink's weight and present a finished edge. They're not recommended for standard laminate, which can swell if water reaches the particleboard core.
Where does the faucet go with an undermount sink?
Because undermount sinks have no faucet deck, the faucet is mounted on the countertop or wall behind the basin. Confirm the hole spacing on your counter matches the faucet you choose.
