The Simpson 1-1/2 x 9-1/4 Welded Top-Flange Joist Hanger WP29.25 is a heavy-duty structural connector from Simpson engineered to support joists on purlins or beams across a wide range of residential and commercial framing applications. Built from 12-gauge steel with a welded top-flange design, this hanger handles wood-to-wood, wood-to-steel, and cold-formed steel connections, making it a dependable choice for contractors tackling everything from standard floor framing to complex sloped or skewed roof assemblies.

Key Features

• Welded Top-Flange Construction - The welded build and top-flange design provide a rigid, low-profile connection that installs cleanly against the header, reducing the risk of field error and keeping framing tight.
• Skew Capacity Up to 84 deg. - Accommodates sharply angled framing layouts without the need for custom fabrication, saving time and materials on non-standard or irregular joist runs.
• Slope Capacity Up to 45 deg. - Supports pitched roof and sloped floor assemblies at steep angles, giving builders a single connector solution across both horizontal and angled applications.
• 12-Gauge Stirrup Material - The 97 mil steel stirrup delivers the structural integrity needed for demanding residential and commercial loads, while keeping the overall profile manageable for tight framing bays.
• Multi-Substrate Compatibility - Approved for wood-to-wood, wood-to-steel, and cold-formed steel framing applications, so this hanger adapts to mixed-material construction without requiring a change in connector strategy.
• Simpson Strong-Tie Gray Paint Finish - The factory-applied finish provides a consistent, corrosion-resistant coating suited for protected interior framing environments.

Why This Product

• Unmatched Angular Flexibility - With skew tolerance up to 84 deg. and slope support up to 45 deg., this top-flange joist hanger covers the widest range of framing angles a single connector of its size is likely to encounter, reducing the need to source multiple hanger types for one project.
• Versatile Across Connection Types - Approved for wood-to-wood, wood-to-steel, and cold-formed steel connections, this hanger works across the mixed framing systems common in both residential and commercial construction.
• Domestic Manufacturing - Produced in the United States, this connector supports consistent quality standards and reliable material traceability for projects where provenance matters.
• Purpose-Built for I-Joist and Purlin Applications - Designed specifically to support joists on purlins or beams, the WP29.25 addresses the structural requirements of engineered lumber framing with a connector built to match the 1 1/2 in. x 9 1/4 in. joist profile precisely.

Specifications

• Model Number: WP29.25
• Brand: Simpson Strong-Tie
• Joist Size: 1-1/2 in. x 9-1/4 in.
• Description: 1-1/2 x 9-1/4 Welded Top-Flange Joist Hanger
• Stirrup Material: 97 mil (12 ga.)
• Finish: Simpson Strong-Tie Gray Paint; select models available hot-dip galvanized as a Custom Order
• Maximum Skew: Up to 84 deg.
• Maximum Slope: Up to 45 deg.
• Country of Origin: United States

Approved Applications

• Supporting joists on purlins or beams in residential and commercial framing
• Wood-to-wood structural connections
• Wood-to-steel structural connections
• Cold-formed steel framing applications
• Sloped roof and pitched framing assemblies (up to 45 deg.)
• Skewed framing configurations (up to 84 deg.)

Options

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