The Simpson Double 1-1/2 x 9-1/4 Welded Top-Flange Joist Hanger is a heavy-duty structural connector engineered to support double joist members on purlins or beams across a broad range of residential and commercial framing applications. Built by Simpson, this welded hanger handles wood-to-wood, wood-to-steel, and cold-formed steel connections with equal reliability, and its capacity to be skewed up to 84 deg. and sloped up to 45 deg. makes it well suited for angled roof assemblies, sloped floor systems, and other demanding framing configurations where a standard fixed hanger falls short.

Key Features

• Double 1-1/2 x 9-1/4 joist sizing - accommodates paired lumber members at this exact dimension, delivering the load capacity needed for heavier framing assemblies without requiring a custom workaround.
• Skew range up to 84 deg. - allows installers to handle severely angled framing conditions, reducing the need for field fabrication and keeping the installation clean and code-compliant.
• Slope range up to 45 deg. - supports pitched roof and floor framing assemblies, making this hanger a single versatile solution across both sloped and level applications.
• Multi-substrate compatibility (wood-to-wood, wood-to-steel, cold-formed steel) - eliminates the need to source separate hangers for mixed-material framing, simplifying procurement on complex projects.
• Welded top-flange construction in 97 mil (12 ga.) steel - provides the structural rigidity and consistent geometry that welded fabrication delivers, reducing on-site fit issues compared to formed alternatives.
• Simpson Strong-Tie Gray Paint finish - provides corrosion resistance suitable for standard interior framing environments, with hot-dip galvanized available as a configurable option for more demanding exposure conditions.

Why This Product

• Engineered for complex framing, not just straight runs - with skew capability up to 84 deg. and slope capability up to 45 deg., this hanger addresses the angled and pitched connections that cause delays on demanding residential and commercial projects.
• One hanger, multiple substrates - its compatibility with wood-to-wood, wood-to-steel, and cold-formed steel framing means fewer SKUs to manage and fewer interruptions when site conditions require a change in supporting structure.
• Heavy-gauge welded build from a trusted structural connector brand - the 97 mil (12 ga.) steel stirrup and welded construction reflect the material and fabrication standards that structural framing professionals rely on for consistent, repeatable performance.
• Sized specifically for double-member applications - rather than adapting a single-joist hanger, this product is purpose-built for double 1-1/2 x 9-1/4 assemblies, ensuring proper fit and full load transfer without field modification.

Specifications

• Specification: Detail
• Model Number: WP29.25-2
• Brand: Simpson Strong-Tie
• Joist Size: 1-1/2 in. x 9-1/4 in.
• Description: Double 1-1/2 x 9-1/4 Welded Top-Flange Joist Hanger
• Material - Stirrup: 97 mil (12 ga.) steel
• 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
• Angled or sloped roof and floor framing assemblies requiring skewed or sloped hangers

Options

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