American Standard Portsmouth 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$478.41
American Standard Portsmouth 18 x 16-Inch Stainless Steel Undermount Single-Bowl ADA Kitchen Sink - AMS-18SB6181600S

American Standard Portsmouth 18 x 16-Inch Stainless Steel Undermount Single-Bowl ADA Kitchen Sink - AMS-18SB6181600S

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Model: 18SB6181600S.075
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$478.41
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Portsmouth 18 x 16-Inch Stainless Steel Undermount Single-Bowl ADA Kitchen Sink
  • Single-bowl stainless steel kitchen sink
  • 18-gauge stainless steel
  • 6" depth
  • Undermount installation
  • 21" (533 mm) cabinet required
  • Includes: - 9028000.075 Waste Fitting - 791676-100.0070A Undermount Sink Clips
  • Features SoundSecure+ sound pads
  • Features StoneLock undercoating
  • Cutout template and instructions included
  • Nominal Dimensions: 17-13/16" x 15-15/16" x 6" (453 x 405 x 152 mm);Bowl Size: 15-7/8" (403 mm) wide 13-15/16" (354 mm) front to back 6" (152 mm) deep

Manufacturer Resources

Product Specs

Product Type:
Undermount Sink
Product Group:
Kitchen
Product Subgroup:
Sinks
Family:
PORTSMOUTH
Luxury/Non Luxury:
Luxury
Residential Commercial:
Residential
Product Length:
20.375
Product Height:
12.375
Product Weight:
11.31
Product Width:
17.875
Department:
Plumbing

American Standard 18SB6181600S.075 – Frequently Asked Questions

1) What size cabinet do I need for the American Standard Portsmouth 18 x 16 undermount kitchen sink?
Plan on a 21 inch (533 mm) base cabinet minimum. The sink itself measures 17-13/16 x 15-15/16 x 6 inches (453 x 405 x 152 mm) nominal, so a 21 inch cabinet gives you the rail clearance needed to mount it under the counter. Anything narrower won't take it.
2) Is the Portsmouth 18SB6181600S deep enough for an ADA compliant kitchen counter?
The bowl is 6 inches deep, which is the shallow depth used for ADA kitchen sinks so the drain and trap can be routed to leave knee clearance under an accessible counter. American Standard lists it as an ADA kitchen sink. Bowl footprint is 15-7/8 inches wide by 13-15/16 inches front to back.
3) Does the Portsmouth undermount sink come with mounting clips and a drain?
Yes on both. The carton includes the 9028000.075 waste fitting and 791676-100.0070A undermount sink clips, plus the cutout template and installation instructions. You still supply the silicone or adhesive for setting it to the stone, the P-trap and tailpiece, and the faucet, since an undermount bowl has no deck holes.
4) Where does the faucet mount if I use an undermount sink like this one?
It mounts in the countertop, not the sink. The Portsmouth 18 x 16 is an undermount bowl with no faucet ledge, so the fabricator drills the faucet and any soap dispenser or air gap holes through the counter behind the cutout. Decide your faucet and accessories before the slab is templated.
5) Is 18-gauge stainless heavy enough for a kitchen sink, and how does this one handle noise?
The Portsmouth bowl is 18-gauge stainless, the common gauge for residential kitchen sinks and thicker than the 20- and 22-gauge bowls used in budget work. It also carries SoundSecure+ sound pads and StoneLock undercoating on the underside, which cut the drumming and condensation you get from a bare bowl. American Standard lists it for residential use.
6) Will this sink work with a laminate or tile countertop?
Undermount bowls need a solid countertop with a finished, sealed cutout edge, so granite, quartz, or solid surface. Standard laminate has a particleboard core that the clips and silicone cannot seal to. If your counters are laminate, you want a drop-in sink instead of the Portsmouth 18SB6181600S.
7) How much does the American Standard Portsmouth undermount sink weigh for a one-person install?
About 11.31 pounds, light enough for a single installer to hold up while setting clips, though a support cradle or bracing under the bowl makes the silicone cure straight. Shipping footprint runs 20.375 by 17.875 by 12.375 inches.
8) What is the exact part number to order the Portsmouth stainless undermount sink?
Order it as American Standard 18SB6181600S.075, the stainless steel finish of the Portsmouth family. The .075 suffix carries the stainless finish code.
How fast can I get the American Standard 18SB6181600S.075 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the American Standard 18SB6181600S.075 come with a warranty?
Absolutely. The American Standard 18SB6181600S.075 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the American Standard 18SB6181600S.075?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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