For one deep undermount bowl, pick the Moen G18180. For two bowls, the G18287. For a square shallow look, the GS181210B. For a drop-in, the GS181631BQ.
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This guide compares four Moen kitchen sinks using Moen’s own spec sheets.
Moen kitchen sinks compared (Moen spec sheets)
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| Model | Mount | Bowls | Overall | Depth | Drain |
|---|---|---|---|---|---|
| G18180 | Undermount | 1 | 31 x 18 in. | 8-1/2 in. | Rear center |
| G18287 | Undermount | 2 | 31-1/2 x 18 in. | 8-1/2 in. | Rear center |
| GS181210B | Undermount | 1 | 31 x 18 in. | 6 in. | Rear center |
| GS181631BQ | Drop-in | 1 | 33 x 22 in. | 7 in. | Rear center |
Moen sells stainless sinks alongside its faucets. All four sheets list a rear center drain, which puts the drain and trap toward the back wall, and the same warranty: lifetime limited to the original homeowner, 10 years in a multifamily installation and 5 years in a commercial one. Each sheet points to Moen’s warranty page for the complete details and limitations. For Moen faucets to pair with these, see our Moen kitchen faucet guide.
Moen G18180: single bowl undermount
Choose the G18180 for one large undermount bowl. Moen’s spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/g18180sp.pdf) lists an 1800 Series single bowl undermount sink in 18-gauge brushed stainless, a 31 by 18-inch overall size, a 29 by 16-inch bowl, an 8-1/2-inch depth, a rear center drain, no faucet holes and the SoundSHIELD sound absorbing system.
The sheet lists countertop mounting brackets as included but says no other hardware is included; the drawing calls for #10-32 screws, wing nuts and washers that are not in the box, plus silicone sealant. A cut-out template is included. On October 15, 2026, the standard new offer sold by Amazon.com showed a delivery date and an add-to-cart button with model G18180.
Check Moen G18180 undermount single bowl kitchen sink on Amazon →
Moen G18287: double bowl undermount
Choose the G18287 if you want two bowls in about the same footprint. Moen’s spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/g18287sp.pdf) lists an 1800 Series double bowl undermount sink in 18-gauge brushed stainless, a 31-1/2 by 18-inch overall size, a 16 by 16-inch left bowl, a 12-1/2 by 16-inch right bowl, an 8-1/2-inch depth, rear center drains and SoundSHIELD.
The drain size is listed as 3-1/2 inches, slightly smaller than the 3-5/8 inches on the other three sheets. As with the G18180, only the mounting brackets come in the box. On October 15, 2026, the standard new offer sold by Amazon.com showed a delivery date and an add-to-cart button with model G18287.
Check Moen G18287 undermount double bowl kitchen sink on Amazon →
Moen GS181210B: shallow, square-cornered undermount
Choose the GS181210B for a modern square look and a shallower bowl. Moen’s spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/gs181210bsp.pdf) lists the same 31 by 18-inch overall size and 29 by 16-inch bowl as the G18180, but with a zero millimeter radius, meaning tight square corners, and a 6-inch depth. It lists 18-gauge brushed stainless, a rear center drain, SoundSHIELD and mounting brackets.
The 6-inch depth is 2-1/2 inches shallower than the G18180. A shallower bowl holds less water and leaves less room under a pull-down spray head for tall pots, so pick it for the look and reach rather than for capacity. On October 15, 2026, the standard new offer sold by eFaucets showed limited stock with model GS181210B.
Check Moen GS181210B undermount square kitchen sink on Amazon →
Moen GS181631BQ: drop-in with QuickMount
Choose the GS181631BQ to replace a standard 33 by 22-inch drop-in sink. Moen’s spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/gs181631bqsp.pdf) lists an 1800 Series single bowl drop-in sink in 18-gauge brushed stainless, a 33 by 22-inch overall size, a 29-1/4 by 16-1/16-inch bowl, a 7-inch depth, a rear center drain, one 1-1/2-inch faucet hole, a U-channel mounting system with QuickMount installation hardware included, and SoundSHIELD.
The sheet gives a 32-1/2 by 21-1/2-inch cut-out with an 11/16-inch corner radius and says plus or minus 1/16 inch is acceptable. Unlike the undermount sheets, it gives the cut-out size rather than listing a template, so if you are reusing an old opening, measure it against those numbers first. It also describes the sink as FHA compliant when installed to the required standards and tells buyers to check local requirements. On October 15, 2026, the standard new offer sold by Advantage Sales showed stock with model GS181631BQ.
Check Moen GS181631BQ drop-in kitchen sink on Amazon →
Undermount or drop-in: what the sheets tell you
Hardware. The three undermount sheets list mounting brackets as included but say the screws, wing nuts and washers are not, and the drawings show silicone sealant. The drop-in sheet lists QuickMount hardware as included.
Counter. Undermount sinks hang below a solid counter such as stone or quartz, so the counter edge shows. Drop-in sinks sit on top of the counter and work with laminate.
Faucet. The undermount sinks have no faucet holes, so the faucet goes in the counter. The drop-in has one hole; check that your faucet and any sprayer or soap dispenser fit.
Templates. The undermount sheets list cut-out templates included, with template numbers 22519 for the G18180 and GS181210B and 22517 for the G18287.
Standards. All four sheets list third-party certification to ASME A112.19.3/CSA B45.4.
Reading the Moen drawings
Each Moen sheet is marked “Critical dimensions, do not scale,” so rely on the printed numbers rather than measuring the picture.
Drain position. The G18180, G18287 and GS181210B drawings show the drain center 4-1/2 inches from the back edge of the sink. On the double bowl G18287, both drains sit at the back, one in each bowl, with the larger 16-inch bowl on the left and the 12-1/2-inch bowl on the right.
Drain hole. The sheets list a 3-5/8-inch hole on the single bowls and 3-1/2 inches on the G18287. Standard basket strainers and disposal flanges are made for this range, but confirm the fit with the strainer or disposal maker.
Installation detail. The undermount drawings show the bracket clamping the sink rim up against the bottom of the countertop with a bead of silicone between them. Plan for that work, or have your countertop installer mount the sink.
Check these before you order
- Cabinet. Measure the inside of the base cabinet against the overall size.
- Depth. 8-1/2, 7 or 6 inches; check the overall depth against your disposal.
- Faucet holes. None on the undermount models; one on the drop-in.
- Hardware. Buy screws, wing nuts and washers for the undermount models.
- Drain. All four are rear center; the trap sits toward the back wall.
- Strainer. The sheets do not list a strainer in the box.
Which Moen kitchen sink should you buy?
For one deep undermount bowl, the G18180. For two bowls, the G18287. For a square modern look and a shallower bowl, the GS181210B. For a drop-in replacement in a 33 by 22-inch opening, the GS181631BQ. For other brands, see our kitchen sink guide and undermount vs drop-in guide.
Frequently asked questions
What gauge are Moen kitchen sinks?
All four 1800 Series sheets here list 18-gauge stainless steel.
What is Moen SoundSHIELD?
Moen’s sheets describe SoundSHIELD as a sound absorbing system.
Does a Moen undermount sink include mounting hardware?
The sheets list brackets as included but say screws, wing nuts and washers are not.
What is the warranty on Moen kitchen sinks?
Lifetime limited to the original homeowner, 10 years multifamily and 5 years commercial, per the sheets.
Which Moen sink is shallowest?
The GS181210B, at 6 inches deep.
How we chose
This document-based guide makes no hands-on testing claim. We read Moen’s spec sheets for the G18180, G18287, GS181210B and GS181631BQ. On October 15, 2026, we checked each linked standard new Amazon offer for model, seller, stock and an add-to-cart button. Read our selection method and about Plumbing Picks.
Primary sources
- Moen G18180 spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/g18180sp.pdf): single undermount 8-1/2 in.
- Moen G18287 spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/g18287sp.pdf): double undermount.
- Moen GS181210B spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/gs181210bsp.pdf): zero radius, 6 in.
- Moen GS181631BQ spec sheet (maker page: assets.moen.com/shared/docs/product-specifications/gs181631bqsp.pdf): drop-in, QuickMount.