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

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.