The Simpson Double 2-5/16x20 Welded Top-Flange Joist Hanger is a heavy-duty structural connector engineered by Simpson to securely support 2-5/16 in. x 20 in. double I-joists on purlins or beams. Its welded top-flange design delivers reliable load transfer across wood-to-wood, wood-to-steel, and cold-formed steel framing connections, making it a dependable choice for a wide range of commercial and residential structural applications where skewed or sloped joist installations are required.

Key Features

• Welded top-flange construction for double I-joists - provides a rigid, precise seat that keeps 2-5/16 in. x 20 in. double I-joists properly aligned and fully supported at the bearing point.
• Skewable up to 84 deg. - allows the hanger to accommodate sharply angled framing layouts without requiring custom fabrication, saving time and reducing on-site complexity.
• Slopeable up to 45 deg. - supports pitched roof and floor applications, giving installers the flexibility to handle sloped joist conditions in a single connector.
• Compatible with wood-to-wood, wood-to-steel, and cold-formed steel applications - one hanger works across multiple structural systems, reducing the need to source separate connectors for different framing conditions.
• 12 ga. stirrup material - delivers the structural thickness needed for heavy load-bearing joist connections while keeping the overall profile manageable for installation.
• Simpson Strong-Tie Gray Paint finish - provides a protective coating suited to interior framing environments, with hot-dip galvanized options available for projects requiring enhanced corrosion resistance.

Why This Product

• Exceptional angular flexibility in one connector - with skew capacity up to 84 deg. and slope capacity up to 45 deg., this hanger handles the kind of complex joist geometry that would otherwise require time-consuming field modifications or multiple connector types.
• Built for demanding structural connections - the welded construction and 12 ga. stirrup material make this hanger a strong fit for heavy double I-joist applications where connection integrity is critical to the overall frame.
• Broad framing system compatibility - supporting wood-to-wood, wood-to-steel, and cold-formed steel framing in a single product means builders and contractors can standardize on this connector across varied project types.
• Domestically produced quality - this hanger is made in the United States under the Simpson quality standards that structural engineers and contractors rely on for consistent, code-relevant performance.

Specifications

• Model Number: WP3520-2
• Brand: Simpson Strong-Tie
• Joist Size: 2-5/16 in. x 20 in.
• Description: Double 2-5/16x20 Welded Top-Flange Joist Hanger
• Material - Stirrup: 97 mil (12 ga.)
• Finish: Simpson Strong-Tie Gray Paint; some models available hot-dip galvanized as a custom order
• Max Skew: Up to 84 deg.
• Max Slope: Up to 45 deg.
• Country of Origin: United States

Approved Applications

• Wood-to-wood framing connections
• Wood-to-steel framing connections
• Cold-formed steel framing applications
• Joist support on purlins or beams
• Skewed and/or sloped joist installations

Options

• Contact us for Configurable Options and Special orders
• Refer to the Special-Order Worksheet for ease of ordering a Custom WP Hanger

Note: Product dimensions may differ from picture. Please see the item description above for specifications.