18G 40/60 - 3120S
A sink we fabricate and install — get your free quote.
Details
- Material
- Metal
- Color
- Stainless
- Finish
- Undermount
Templated, fabricated, and installed by our own crew across the northwest suburbs.
How we do sink & faucet installation →
Free in-home quoteWhat is 18G 40/60 - 3120S?
18G 40/60 - 3120S is an 18-gauge stainless steel double-bowl kitchen sink, about 31.5 by 20.5 inches with bowls 7.5 and 9 inches deep. Stainless at 18 gauge is the standard grade: the price benchmark, and thick enough for most households.
About 18G 40/60 - 3120S
A brass or zinc body under a plated finish — the finish is what you live with day to day, not the metal underneath it. It reads Stainless. It comes undermount.
Undermount openings are cut and polished in our shop off the template, not freehanded in your kitchen. It is one of 8 colors we stock from the Double Bowl Kitchen Sinks range.
Specs
What is on the spec sheet — nothing inferred.
- Material
- Metal
- Collection
- Double Bowl Kitchen Sinks
- Color family
- Stainless
- Finish
- Undermount
How it meets the countertop
The mount type decides what we cut, and what you see every day.
An undermount installation, which changes what we do more than what you do. The cutout is made to the bowl and its edge finished, since nothing covers it — and the sink is supported from underneath rather than resting on the counter. No rim means no seam to scrub along.
Mount
- Undermount
Size, depth, and the cabinet under it
The numbers off its own spec line, and what each one constrains.
Size
Figure on a base cabinet of at least 36" — the rule of thumb is bowl width plus about three inches for the cabinet sides. We measure your actual run at template rather than trusting the rule.
- 31 1⁄2"x20 1⁄2"
Two bowls
This is a double bowl, which means the width quoted is the overall footprint and each side is smaller than it sounds. Worth picturing your largest pan before choosing it over a single.
What it costs installed
Published benchmark ranges, so you can sanity-check any quote — including ours.
| Line item | Typical range | Unit | As of |
|---|---|---|---|
| Farmhouse sink cutout premium on a countertop fabrication quote | $150–$400 | per project | 2026-07 |
| Farmhouse/apron sink conversion (installed) | $700–$2,200 | per project | 2026-02 |
| Kitchen sink replacement, drop-in (installed) | $300–$900 | per project | 2026-02 |
| Kitchen sink replacement, undermount (installed) | $500–$1,400 | per project | 2026-02 |
| Sink cutout | $150–$400 | per cutout | 2026-07 |
| Sink or faucet cutout in stone countertop | $100–$500 | per cutout | 2025-01 |
Regional benchmarks for the Chicago market — not an Ace quote. Your number depends on square footage, edge, cutouts and tear-out.
Sources: SlabWise; NearbyHunt, 2026; SlabWise, 2026; Granite Selection (Chicago-area fabricator), 2025
Similar surfaces
Same family — worth seeing side by side before you commit.
Metal18G 40/60 - 3120
Stainless · Undermount
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Metal18G 50/50 - 3118
Stainless · Undermount
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Metal18G 60/40 - 3120
Stainless · Undermount
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Metal18G 60/40 - 3120S
Stainless · Undermount
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MetalDouble Bowl 18G 50/50 - 3322
Stainless · Overmount
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MetalHandcrafted 16G 50/50-3219
Stainless · Handcrafted undermount
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Questions about 18G 40/60 - 3120S
Answered from this fixture’s own catalog attributes — nothing generic.
How does 18G 40/60 - 3120S mount?
Undermount. The bowl hangs below the countertop and no rim breaks the deck, so crumbs go straight over the edge instead of catching on a lip. The counter carries the weight, which is why this style wants a fabricated stone top — we polish the cutout and clip the sink to the underside as part of the same job. This one measures 31 1⁄2"x20 1⁄2" across, so it wants a 36" base cabinet.
How many bowls does 18G 40/60 - 3120S have?
An offset pair, split 40/60. You get one bowl big enough for a sheet pan and one narrow one for the disposal, which is closer to how a kitchen actually gets used than two equal halves are. The pair measures 31 1⁄2"x20 1⁄2" across, so it wants a 36" base cabinet.
What is 18G 40/60 - 3120S made of?
Formed stainless — 18 gauge stock. It is the pragmatic choice rather than the decorative one, and it is what most of these sinks are for a reason: it is the only material here that shrugs off both a dropped bottle and a boiling pot. On a bowl this wide the gauge is doing real work — there is a lot of unsupported span under your hands, and it is the difference between a sink that feels solid and one that gives.
Want this in your kitchen?
We supply and install 18G 40/60 - 3120S out of our Elk Grove Village shop — templated digitally, cut to your cabinets, installed by our own crew.
Ready for a real number?
Free in-home template and an honest quote — you keep your money until there's a countertop to trade it for.