Sioux Chief 821-2QAS Round-to-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.62
Sioux Chief 821-2QAS Round-to-Square Strainer Adapter, Stainless Steel

Sioux Chief 821-2QAS Round-to-Square Strainer Adapter, Stainless Steel

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Model: 821-2QAS

In Stock (leaves warehouse same day if ordered before 3pm ET)

$5.62
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Sioux Chief 821-2QAS Round-to-Square Strainer Adapter, Stainless Steel

The Sioux Chief 821-2QAS Round-to-Square Strainer Adapter is a stainless steel rough-in component designed to convert a round drain body opening to accept a square strainer, giving plumbers a clean fit when matching strainer style to existing drain hardware. Built from stainless steel for corrosion resistance in wet, behind-the-wall and under-floor rough-in environments, this adapter is manufactured by Sioux Chief for professional drain assembly work. It ships as a matched strainer-and-adapter set so installers do not have to source the two pieces separately. It is intended for plumbers and contractors completing floor or shower drain assemblies where a round-to-square strainer transition is required during rough-in.

Key Features

  • Round-to-Square Conversion: Adapts a round drain body opening to accept a square strainer for flexible drain hardware matching on the job.
  • Stainless Steel Construction: Corrosion-resistant stainless steel material suited to wet, rough-in plumbing environments.
  • Combination Strainer & Adapter: Ships as a matched strainer-and-adapter set for a single-source fit on the drain assembly, eliminating the need to hunt for a compatible pairing.
  • Compact Rough-In Component: Sized for behind-the-wall and under-floor drain installations handled by professional plumbers and contractors.
  • Consistent Fit: The round-to-square geometry is built to a repeatable spec so multiple units install to the same finished appearance across a job.

Technical Specifications

  • Product Material: Stainless Steel
  • Configuration: Round to Square Adapter
  • Country of Origin: Taiwan
  • Packaging: 5 EA

Typical Applications

  • Floor and Shower Drain Strainer Assemblies
  • Round-to-Square Strainer Conversions
  • Residential and Commercial Rough-In Plumbing
  • Renovation and New Construction Drain Work
  • Multi-Unit Jobs Requiring a Consistent Strainer Appearance

Why Sioux Chief?

Sioux Chief is an established source for rough-in plumbing hardware, and the 821-2QAS strainer adapter follows that same standard with a stainless steel build suited to demanding drain applications. Supplying the strainer and adapter as one matched set reduces the guesswork of pairing compatible drain hardware on site. Choosing this Sioux Chief adapter gives plumbers and contractors a reliable, purpose-built fit for round-to-square strainer conversions on the job.

Manufacturer Resources

Sioux Chief Product Catalog

Product Specs

Product Type:
Strainer Adapter
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Drains and Cleanouts
Product Material:
Stainless Steel

Sioux Chief 821-2QAS – Frequently Asked Questions

1) What does the Sioux Chief 821-2QAS strainer adapter actually do?
It converts a round drain body opening so it will accept a square strainer. If the drain body in the floor is round but the finished look you want (or the existing hardware on the rest of the job) is a square strainer, the 821-2QAS makes that transition. It ships as a matched strainer-and-adapter set, so you are not pairing two pieces from different sources.
2) Is the 821-2QAS strainer just the adapter, or does the square strainer come with it?
Both. The 821-2QAS is supplied as a combination strainer and adapter set, so the square strainer and the round-to-square adapter come together as a matched pair. You do not need to order a separate strainer to finish the assembly.
3) Can I use the 821-2QAS to put a square strainer on a shower drain during a remodel?
Yes, that is one of the stated applications. The adapter is intended for floor and shower drain strainer assemblies in both renovation and new construction, so if the existing round drain body is staying and the owner wants a square top, this is the conversion piece.
4) Will a stainless steel floor drain strainer hold up in a wet, below-floor install?
Stainless steel is what the 821-2QAS is built from, and that is the point of it: corrosion resistance in wet behind-the-wall and under-floor rough-in conditions where a plated or ferrous part would eventually rust at the strainer face.
5) How many 821-2QAS strainer adapters come in a pack?
Packaging is 5 each. For a multi-unit job (apartment bathrooms, hotel showers) that works out well, since all five install to the same repeatable round-to-square geometry and give a consistent finished strainer appearance across the openings.
6) Is this a finish-trim part or a rough-in part?
Both ends of that, really. The adapter is a rough-in component that goes into the drain assembly, but the square strainer it carries is what you see in the finished floor. Plan it with the drain body during rough-in rather than treating it as a trim-out afterthought.
7) What is the exact part number and who makes the round-to-square strainer adapter?
Sioux Chief, part number 821-2QAS. That is the number to quote for a stainless steel round-to-square strainer adapter set. It is made in Taiwan.
How fast can I get the Sioux Chief 821-2QAS 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 Sioux Chief 821-2QAS come with a warranty?
Absolutely. The Sioux Chief 821-2QAS 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 Sioux Chief 821-2QAS?
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
Why buy the Sioux Chief 821-2QAS from ZenSupply?
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