Undermount Kitchen Sinks

Undermount kitchen sinks that mount beneath the worktop for a clean, seamless counter edge and easy wipe-down. The range covers stainless steel, quartz composite and fireclay, in single- and double-bowl layouts and nominal widths from 24 to 33 inches, with finishes including white, grey and matte black; stainless models are built in 18-gauge (1.2 mm) steel. Suited to residential kitchens, multi-unit housing and commercial fit-outs. Custom sizes, bowl configurations and finishes available on request.

Service
OEM / ODM · free mold from 300 pcs
MOQ
20 ft / 40 ft containersBelow 1 container: your own China forwarder required.
Lead time
30–45 days after sample
86 products

Baseline before the variety

Undermount kitchen sinks: the spec line most models share

Across the 40 undermount kitchen sinks compared here (of 86 in the collection), the core specs repeat, so the real choices are footprint, bowl split and depth.

Body material
304 stainless steel on 39 stainless steel sink models; quartz composite on 1 (SN6448)
Stainless steel gauge
16G or 18G selectable on 36 sinks; 16G only on the 3 ledge workstation sinks
Bowl depth
Choice of 6" / 7" / 8" / 9" / 10" on 10 sinks; 6" to 9" on 23; a single listed depth on the 3 drainboard and 3 ledge sinks
Drain size
3-1/2" listed on 38 of the 40
Finish
Brushed Satin on 33; Nano Black on W3219S; Matte Grey on SN6448
Corner options
Zero/R10/R15/R19 on the 3 drainboard sinks; Zero/R10 on the 3 ledge sinks
MOQ
50 pcs per model on every profiled sink

Bowl count, then footprint

How the 40 profiled undermount kitchen sinks split by bowl layout

Bowl count is the first split among these undermount sinks.

SANIKB 3333A Undermount Kitchen Sink product photo
SANIKB 11853A — 46-3/4" Triple Bowl Undermount Sink, Two 15-3/4" Plus One 10-7/8"
32
single bowl undermount kitchen sinks, from the 12.6" wide 4632A to the 33.1" HM8444DB with drainboard
7
double bowl sinks, including two 1160 x 460 mm drainboard sinks
1
triple bowl kitchen sink, the 46.7" x 20.9" 11853A with two large bowls and one small
13
sinks tagged bar / prep, from 13.0" x 13.0" (3333A) to 30.0" x 18.0" (MS3018)
3
ledge workstation sinks, all 16G with a 10" bowl
12.6" to 46.7"
overall width range across the profiled stainless steel sinks

Only 7 of the 40 are double bowl sinks, so among the double bowl options name the split (50/50, 60/40 or big plus small) early.

Depth is a per-order choice

One footprint, up to five bowl depths: eight kitchen sinks side by side

On 33 of the 40 undermount kitchen sinks, one listed footprint comes with a choice of bowl depths, picked per order line.

SANIKB 22189S Undermount Kitchen Sink product photo
Overall sizeBowl(s)Depth optionsGaugeLayout
3333A13.0" x 13.0" (330 x 330 mm)11-3/8" x 11-3/8"6" to 9"16G / 18GSingle bowl, bar / prep
4632A12.6" x 17.9" (321 x 454 mm)10-3/8" x 16"6" to 9"16G / 18GSingle bowl, bar / prep
5052A20.0" x 21.0" (508 x 533 mm)18" x 19"6" to 9"16G / 18GSingle bowl
22189S-T22.5" x 18.5" (572 x 470 mm)20-1/2" x 16-1/2"6" to 10"16G / 18GSingle bowl
30189R-T30.5" x 18.6" (775 x 473 mm)28-1/2" x 16-5/8"6" to 10"16G / 18GSingle bowl
321910D32.0" x 19.0" (813 x 483 mm)14-1/2" x 17"6" to 10"16G / 18GDouble bowl, zero radius
9653AL37.4" x 20.9" (949 x 530 mm)21-1/4" x 18-7/8" + 13" x 16-1/2"6" to 9"16G / 18GDouble bowl, big + small
W3319D33.0" x 19.0" (838 x 483 mm)15" x 15-7/8" each10" fixed16G onlyDouble bowl 50/50, ledge

Depth stops at 9" on 23 sinks and reaches 10" on ten: the five -T codes plus 321910D, 301810S, 27189S, 22189S and 17199S.

Matching codes to the buyer

Which undermount sinks fit which kind of order

The specs point each kind of buyer to a different group of undermount sinks in this collection.

Distributors building a core range

For a stainless steel undermount kitchen sink range, the ten sinks with five depth codes run from 17.0" to 32.0" in overall width, all with a 16G or 18G choice and all in Brushed Satin.

Countertop fabricators

Every product lists an outside size and a bowl size, so both can be checked against the countertop drawing before ordering and installation; corner options are listed on the drainboard sinks (Zero/R10/R15/R19) and the ledge sinks (Zero/R10).

Multi-unit and hospitality projects

The 13 bar / prep sinks run from 13.0" x 13.0" to 30.0" x 18.0", and all 13 list a 3-1/2" drain.

Private label programs

Brand owners can pair one of the stock undermount sinks with their own packaging and marking through our OEM/ODM service, keeping the base size and gauge.

Near-twins and one-offs

Kitchen sink codes that are easy to mix up, and the one detail that separates them

Several undermount sinks in this collection have model numbers that differ by one character or suffix that changes the edge, drain or corner, so quote the full product code.

SANIKB HMD11646DB-8 Undermount Kitchen Sink product photo
SANIKB HMD11646DB-8 — Square-Drain Double Bowl Undermount Sink with Drainboard, 1160 x 460 mmHMD11646DB-8 vs -9Same 1160 x 460 mm drainboard double bowl; -8 has a square drain, -9 a round 3-1/2" drain.SANIKB 5945R — Small-Radius Undermount Single Bowl Kitchen Sink 23-1/8x17-3/4, 16G/18G5945A vs 5945RBoth 23.1" x 17.8" with a 21-3/8" x 15-7/8" bowl; A is the rounded-corner body, R the small-radius one.SANIKB 22189R-T — 93-Degree Sharp Edge Single Bowl Undermount Stainless Steel Sink 22.5x18.522189R-T vs 22189S-T vs 22189SThe two T codes are 22.5" x 18.5"; 22189S is 22.0" x 18.0" with a 20" x 16" basin.SANIKB W3219S — Nano Black Undermount Ledge Stainless Steel Kitchen Sink 32x19W3219SThe only stainless steel sink in Nano Black; 32.0" x 19.0", 16G, 10" deep ledge body.Quartz integrated undermount kitchen sink — SANIKB SN6448SN6448The quartz option in this collection: an integrated kitchen sink in Matte Grey, 635 x 482 x 305 mm overall.

Straight answers

Common questions buyers ask about undermount sinks

Which stainless steel gauge is offered? 16G or 18G on 36 of the 39 stainless sinks; the three ledge workstation codes (W3219D-L, W3319D and W3219S) are 16G only.

How deep are the bowls? The three ledge sinks are 10" deep, HM8444DB lists 200 mm and the two HMD11646DB sinks 230 mm; the rest take a depth code.

Which double bowl sinks are there? In this collection: 50/50 (W3319D), 60/40 (W3219D-L), a zero radius double bowl (321910D), big plus small bowls (9653AL), a twin-bowl bar sink with two 13" x 16" bowls (7447A), or a double bowl kitchen sink with drainboard (HMD11646DB-8 and -9).

Which undermount kitchen sinks have zero radius corners? 17199S, 22189S, 27189S and 301810S are zero-radius single bowl sinks and 321910D a double bowl with 90-degree zero radius corners; drainboard and ledge sinks list Zero among their corner options.

Can a faucet or accessories be quoted too? List any kitchen faucet or accessories in the same RFQ so every product on the order is priced together.

Is a custom size possible? The sizes above are the listed range; custom sizes, bowl configurations and finishes are available on request.

Undermount RFQ, line by line

What to include when you request a quote for undermount sinks

  1. Full model code and quantity

    Include every suffix (-T, -8, -9, A, R, S, D) and the quantity per sink; MOQ is 50 pcs per model.

  2. Depth and gauge per line

    Choose one depth code per order line for each sink (6" to 10" or 6" to 9" depending on the series) and 16G or 18G where both are offered.

  3. Countertop and installation type

    Tell us the counter material (granite, marble, quartz or solid surface countertops), the cabinet width at each sink position and the countertop drawing, so each code's outside size and bowl size can be checked before installation.

  4. Zero radius corners and finish

    For drainboard and ledge sinks state the corner (Zero, R10, R15 or R19 where offered); for others confirm Brushed Satin, Nano Black or Matte Grey.

  5. Branding and packing

    List any logo, carton or barcode needs. Each product is priced per order, with written replies from our trade team.

Supply Story and 20ft Container MOQ

This collection covers four materials. Fireclay and vitreous-china undermount kitchen sinks are manufactured in our own ceramic factory, and stainless steel and quartz composite units are produced to SANIKB moulds and specification under the same quality control, so you buy direct. As your single supplier we let you mix every material and model freely to fill one 20ft (20GP) container, which is the order minimum.

Why Choose Undermount Over Drop-In

Undermount kitchen sinks mount beneath the countertop, so there is no raised rim trapping crumbs and water. Buyers wipe debris straight into the bowl, giving a seamless, premium look prized in stone and solid-surface counters. Drop-in models install faster on any worktop and suit laminate. Stocking both lets distributors and contractors match each project, and we supply the full range from one container.

Sizes, Bowl Configurations and Mounting

We offer single-bowl, equal double-bowl, low-divide and offset configurations, plus bar and prep sizes, with common widths spanning roughly 24 to 33 inches. Reveal styles cover positive, negative and zero. Undermount installation uses clips, brackets or adhesive depending on material and countertop. Stainless gauges, fireclay wall thickness and quartz density are all specified, so your projects fit every cabinet and worktop.

OEM, ODM and Private Label

We support OEM, ODM and private-label programs across all materials. For ceramic, our factory adjusts dimensions, glaze, color and bowl layout to your drawings. For stainless and quartz lines, we set custom finishes, packaging and branding to your order. Logo engraving, custom cartons, barcodes and tailored manuals are available. Send specifications or samples and we develop, sample and produce to your market requirements.

Quality, Compliance, Service and After-Sales

Every order is inspected before consolidation, whether ceramic, stainless or quartz. Materials meet relevant export standards, and documentation supports your customs and certification needs. Our service team replies fast across quoting, samples and lead times. After-sales responsibility is ours: defective goods are replaced or fully compensated. We never shirk responsibility, so importers and contractors order with confidence on every container.

FAQs

What does this Undermount Kitchen Sinks collection include?

It includes undermount kitchen sinks in fireclay, vitreous china, stainless steel and quartz composite, in single and multi-bowl layouts. Ceramic, stainless and quartz models are all produced to SANIKB specification. Browse the full Kitchen Sinks hub to combine materials in one container.

Which materials do you manufacture versus source?

We manufacture the ceramic models in our own factory, including fireclay sinks and vitreous china. Stainless steel and quartz composite undermount sinks are produced to SANIKB moulds and specification. Either way, we quality-control, consolidate and ship them as your single supplier in one 20ft container.

What is the minimum order quantity?

The MOQ is one full 20ft (20GP) container, mixed freely. Combine undermount kitchen sinks across materials, sizes and bowl configurations from a single supplier. You can also add drop-in kitchen sinks to the same container, keeping freight efficient and your assortment broad for every project.

Can I get custom branding or sizes?

Yes. We support OEM, ODM and private label across all materials. Our ceramic factory tailors dimensions, glaze and bowl layout to your drawings, and stainless and quartz lines get custom finishes and packaging to your order. Logo engraving, branded cartons and tailored manuals are available on request for your market.

What happens if products arrive defective?

After-sales responsibility is ours. Any defective goods are replaced or fully compensated, and we never shirk responsibility. Every order is inspected before consolidation, whether factory-made fireclay sinks or sourced stainless and quartz, so importers and contractors receive consistent, export-ready quality on each container.

How do I get a wholesale quote?

Send your target undermount kitchen sink models, materials, sizes and quantities, and our team replies within 12 business hours with pricing across our full entry-to-premium range. Mix items from Kitchen Sinks into one 20ft container. Request a quote and we confirm lead times, samples and consolidated shipping for your order.