The Simpson Double 2-5/16x18 Welded Top-Flange Joist Hanger is a heavy-duty framing connector engineered by Simpson to support double 2-5/16 x 18 in. joists on purlins or beams across a wide range of residential and commercial structural applications. Its welded top-flange construction accommodates wood-to-wood, wood-to-steel, and cold-formed steel framing configurations, while its generous skew and slope range makes it equally at home in straightforward and complex framing layouts alike.

Key Features

• Welded Top-Flange Construction - The welded top flange seats securely on purlins or beams, delivering solid, consistent joist support without relying on field assembly of the flange connection.
• Double Joist Capacity - Sized specifically for double 2-5/16 x 18 in. members, this hanger eliminates the need to pair single hangers or fabricate a custom solution for doubled joist assemblies.
• Up to 84 deg. Skew Adjustment - Accommodates heavily skewed framing layouts, giving contractors and builders the freedom to handle angled structural conditions without special fabrication.
• Up to 45 deg. Slope Adjustment - Supports sloped roof and floor framing applications, reducing the need for additional hardware or custom-cut connections at angled intersections.
• Multi-Substrate Compatibility - Approved for wood-to-wood, wood-to-steel, and cold-formed steel connections, making this a single versatile connector suited to diverse structural systems on the same jobsite.
• 12 ga. Steel Stirrup - The 97 mil (12 ga.) steel stirrup provides the structural rigidity required for demanding residential and commercial framing loads.
• Simpson Strong-Tie Gray Paint Finish - The factory-applied gray paint finish helps protect the connector during handling and installation, with hot-dip galvanized availability as a custom option for corrosive-environment projects.

Why This Product

• One connector, many configurations - With skew tolerance up to 84 deg. and slope tolerance up to 45 deg., this hanger handles both routine and complex framing conditions without requiring multiple connector types or custom fabrication on the job.
• Built for doubled joist assemblies - Purpose-designed for double 2-5/16 x 18 in. members, it delivers a precise, code-consistent fit that pairing individual hangers simply cannot match.
• Broad structural application approval - Approved for wood-to-wood, wood-to-steel, and cold-formed steel framing, this connector keeps commercial and residential framing crews working across substrate types with a single stocked item.
• American-made quality from a trusted brand - Produced by Simpson and carrying the Simpson Strong-Tie gray paint finish standard, this joist hanger reflects the manufacturing consistency that structural contractors depend on for load-path critical connections.

Specifications

• Model Number: WP3518-2
• Brand: Simpson Strong-Tie
• Joist Size: 2-5/16 in. x 18 in.
• Description: Double 2-5/16 x 18 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
• Skewed framing configurations up to 84 deg.
• Sloped framing configurations up to 45 deg.

Options

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