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Stainless Steel Undermount Kitchen Sinks

by Griffin Products, Inc.

Undermount sinks impart a sleek, contemporary look to any kitchen. Adding the durability of stainless steel makes for a kitchen sink that's hard to beat! Expertly crafted by Griffin right here in the USA, these extra thick, heavy-duty stainless steel sinks are quiet (even with a garbage disposal!) and hold up to any abuse. With multiple configurations to choose from - including a very stylish rounded interior corner design - you're sure to find a sink that meets your needs!
Proudly made in the USA

Stainless Steel Undermount Kitchen Sinks

example of a square corner stainless steel kitchen sink
image of one and a half style double bowl square corner kitchen sink
image of one and three fourth style double bowl stainless steel sink
image of double bowl square corner kitchen sink

These fantastic sinks have a stylish shape that works in both traditional and contemporary designs. Square corners give you greater use of the basin bottom, while an elegant satin finish helps disguise fingerprints. Available as a single bowl, or in several double bowl configurations.


Single Bowl Undermount Kitchen Sinks

Single bowl 16 gauge stainless steel 90 degree sink
Click here for dimensions

Model Bowl Depth Bowl Size Overall Dimensions Price & Quantity
RU-2720-100 8" 24" x 17" 27" x 20" $837.10 Enter a quantity and
RU-3020-100 8" 27" x 17" 30" x 20" $866.55 Enter a quantity and
RU-3320-100 8" 30" x 17" 33" x 20" $931.33 Enter a quantity and
RU-3620-100 8" 33" x 17" 36" x 20" $1,001.77 Enter a quantity and

Some of these sinks are special order and are not returnable.

Check out our amazing selection of sinks!

Click here for installation kits


1 & 1/2 Double Bowl Residential Undermount Sinks

Double bowl square corner kitchen sink
Click here for dimensions

Model Bowl Depth Left Bowl Right Bowl Overall Dimensions Price & Quantity
RU-2720-150-L 8" 8" x 17" 16" x 17" 27" x 20" $1,049.19 Enter a quantity and
RU-2720-150-R 8" 16" x 17" 8" x 17" 27" x 20" $1,053.47 Enter a quantity and
RU-3020-150-L 8" 9" x 17" 18" x 17" 30" x 20" $1,087.07 Enter a quantity and
RU-3020-150-R 8" 18" x 17" 9" x 17" 30" x 20" $1,079.26 Enter a quantity and
RU-3320-150-L 8" 10" x 17" 20" x 17" 33" x 20" $1,097.18 Enter a quantity and
RU-3320-150-R 8" 20" x 17" 10" x 17" 33" x 20" $1,097.99 Enter a quantity and
RU-3620-150-L 8" 11" x 17" 22" x 17" 36" x 20" $1,128.42 Enter a quantity and
RU-3620-150-R 8" 22" x 17" 11" x 17" 36" x 20" $1,112.31 Enter a quantity and

Some of these sinks are special order and are not returnable.

Check out our amazing selection of sinks!

Click here for installation kits


1 & 3/4 Double Bowl Undermount Sinks

Stainless steel double bowl square corner kitchen sink
Click here for dimensions

Model Bowl Depth Left Bowl Right Bowl Overall Dimensions Price & Quantity
RU-2720-175-L 8" 10" x 17" 14" x 17" 27" x 20" $1,050.49 Enter a quantity and
RU-2720-175-R 8" 14" x 17" 10" x 17" 27" x 20" $1,050.32 Enter a quantity and
RU-3020-175-L 8" 11.5" x 17" 15.5" x 17" 30" x 20" $1,073.37 Enter a quantity and
RU-3020-175-R 8" 15.5" x 17" 11.5" x 17" 30" x 20" $1,074.13 Enter a quantity and
RU-3320-175-L 8" 13" x 17" 17" x 17" 33" x 20" $1,099.52 Enter a quantity and
RU-3320-175-R 8" 17" x 17" 13" x 17" 33" x 20" $1,096.02 Enter a quantity and
RU-3620-175-L 8" 14" x 17" 19" x 17" 36" x 20" $1,118.34 Enter a quantity and
RU-3620-175-R 8" 19" x 17" 14" x 17" 36" x 20" $1,130.23 Enter a quantity and

Some of these sinks are special order and are not returnable.

Check out our amazing selection of sinks!

Click here for installation kits


Double Bowl Residential Undermount Sinks

image of 90 degree stainless steel double bowl kitchen sink
Click here for dimensions

Model Bowl Depth Bowl Size Overall Dimensions Price & Quantity
RU-2720-200 8" 12" x 17" 27" x 20" $1,058.18 Enter a quantity and
RU-3020-200 8" 13.5" x 17" 30" x 20" $1,074.97 Enter a quantity and
RU-3320-200 8" 15" x 17" 33" x 20" $1,090.96 Enter a quantity and
RU-3620-200 8" 16.5" x 17" 36" x 20" $1,119.85 Enter a quantity and

Some of these sinks are special order and are not returnable.

Check out our amazing selection of sinks!

Click here for installation kits


...more Kitchen & Bar Undermount Sinks

These oversized, residential style kitchen sinks are a great addition to your home. With rounded edges and 20 gauge construction, these sinks are better than builder quality without breaking the bank. Large enough to fit nearly any pot or pan, these are a great answer to the agony of the too-small sink.

example of large single bowl curved corner kitchen sinkShown: Model# RUS-2918
These undermount sinks feature:
  • Large, residential style undermount sinks fit nearly any pot or pan
  • Perfect complement to any solid surface counter, such as granite
  • 20 gauge, type-304 stainless steel construction
  • 8-1/2" bowl depth
  • 3-1/2" rear-center drain opening for greater under-sink clearance
  • Fully undercoated with sound deadening pads
  • Includes mounting hardware and template
Model Bowl Bowl Depth Bowl Size Overall Dimensions Price & Quantity
RUS-2318 1 8-1/2" 21" x 15-3/4" 23-1/2" x 18-1/4" $361.79 Enter a quantity and
RUS-2918 1 8-1/2" 28" x 15-3/4" 30-1/2" x 18-1/4" $469.33 Enter a quantity and
RUD-3118 2 8-1/2" 14" x 15-3/4" 31-3/4" x 18-1/4" $651.59 Enter a quantity and

Some of these sinks are special order and are not returnable.

Check out our amazing selection of sinks!

Click here for installation kits


Undermount Sink Installation Kits

Please note these sink installation kits are NOT made in the USA

Sink installation kitThis undermount sink installation kit is very easy to install!
Features of these sink installation kits:
  • Now you can quickly and easily mount stainless steel, cast iron, composite, and fireclay sinks under most countertop surfaces
  • These professional under sink installation kits means no more extra work:
    • No shimming
    • No drilling
    • No sawing
    • No gluing
    • And no improvising!
  • Easy to install - only requires a socket wrench and screwdriver (mounting information included)
  • Built to last - with stainless steel leveling bolts & bolt caps
  • Durable brackets will support most sinks
  • Adjustable - no need for shimming or sawing your counter
  • Allows for easy removal of sink
  • Installs in minutes saving you time and money
Installation Type Price & Quantity
Front to back rails - adjusts from 14" to 26"
view installation instructions
$32.15 Enter a quantity and
Side to side straight rails - adjusts from 25" to 47"
view installation instructions
$37.32 Enter a quantity and
Side to side offset (one straight rail and one offset rail) - adjusts from 31" to 47"
view installation instructions
$42.93 Enter a quantity and
Order quantities of 2, 6 or 12 of the same installation kit for additional savings!
Pricing discounts will be shown in the shopping cart

While the sinks are manufactured in the USA, accessories may be imported or assembled in the USA from imported parts.
If you need to know the country of origin of any item, please contact us.

Related Items & Accessories

Frequently Asked Questions

Q. "What do the different types of stainless steel (304, 316, etc) mean?"
A. The term "stainless steel" refers to specific grades of steel that contain more than 10% chromium. Stainless steel may also include a variety of other elements (such as nickel, titanium, molybdenum, etc); it resists corrosion and is generally a stronger, more reliable steel. The most common grades of stainless steel are:

Type 304: Aside from having a higher content of chromium than most other types of stainless steel, type 304 also contains nickel; this enables it to withstand most ordinary corrosion in architecture, is durable in typical food processing environments, and resists most chemicals.

Type 316: Similar to type 304, but also contains a small amount of molybdenum, which is an alloy element #304 does not contain (but one that provides even stronger resistance to some deterioration). Types 304 and 316 are grades of stainless steel that are most often used in plumbing, as well as in the manufacturing of kitchen utensils and sinks.

Type 409: Does not contain virtually any nickel at all, but also is the stainless steel that contains the least amount of chromium. Type 409 is more suitable for high temperature applications, which is why it's often used in automotive trim and exhaust systems, or hot water tanks.

Type 410: Also does not contain any significant nickel; its primary difference to type 409 stainless is characterized by the use of heat treatment for hardening and strengthening. Type 410 is not appropriate for severely corrosive applications, but used instead in environments that require high strength; this is why it's the type of stainless steel that's often used in surgical equipment.

Type 430: Another plain-chromium stainless steel, similar to type 409, but is usually used in decorative applications.

Please note: While we strive to ensure every product we label as "Made in the USA" really is 100% made in the USA, it is also important to understand that sometimes manufacturers make changes to their products, or for various reasons may receive components or materials that they would normally purchase domestically from an overseas supplier - and they don't necessarily let distributors (like us!) know that they've changed something about the product or where it is manufactured.

If you receive a product that PlumbingSupply.com® says is "Made in the USA" and the product states it was manufactured elsewhere, please contact us. We will happily replace or refund your purchase to your satisfaction.

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