The Simpson HGLTV418-2 HGLTV Top-Flange Joist Hanger for Double 3-1/2 in. x 18 in. Engineered Wood is a heavy-duty connector built by Simpson for structural composite lumber header applications that require high load capacity. Designed specifically for large engineered wood members, this top-flange hanger features precisely located nail holes that prevent lamination splitting and protect header integrity under demanding structural loads. The Funnel Flange design streamlines beam seating during installation, and the dual-gauge steel construction delivers the rigidity needed for critical framing connections in residential and commercial builds alike.

Key Features

• Funnel Flange design - guides beams into position quickly and accurately, reducing installation time and the chance of misalignment on the job site
• Top-flange nails sized and specifically located to prevent lamination splitting - protects the structural composite lumber header from degradation, preserving long-term load capacity
• Top flange made from 3-gauge steel - provides the heavy-duty rigidity required for high-load SCL header connections where thinner steel would be insufficient
• Stirrup made from 7-gauge steel - balances strength and formability in the seat area, securely cradling the double engineered wood member
• Compatible with weld-on applications - gives structural fabricators flexibility to incorporate this hanger into steel-framed or hybrid construction assemblies
• Web stiffeners required with I-joists - a clear installation requirement that, when followed, ensures full structural integrity and code-compliant performance
• Simpson Strong-Tie gray paint finish - provides a consistent, professional appearance and baseline corrosion resistance suitable for protected interior structural applications

Why This Product

• Engineered for high-load SCL header connections - the HGLTV418-2 is purpose-built for structural composite lumber applications where standard hangers lack the load rating, making it a reliable choice when the framing demands cannot be met by lighter-gauge alternatives
• Dual-gauge steel construction matched to each zone - by using heavier 3-gauge steel in the top flange and 7-gauge steel in the stirrup, the hanger delivers targeted strength exactly where the structural forces are greatest, without unnecessary bulk throughout
• Nail placement that actively protects the header - unlike generic hangers, the top-flange nail holes on this hanger are specifically sized and positioned to prevent splitting of SCL laminations, maintaining the integrity of expensive engineered lumber over the life of the structure
• Versatile installation options for different job site conditions - support for weld-on applications means this hanger works across conventional nailed framing and fabricated steel assemblies, giving contractors and engineers a single solution for varied structural contexts

Specifications

• Model Number: HGLTV418-2
• Member Size: Double 3-1/2 in. x 18 in.
• Gauge: Top flange - 3 gauge; stirrup - 7 gauge
• Coating: Simpson Strong-Tie Gray Paint
• Finish: Simpson Strong-Tie Gray Paint
• Country of Origin: United States

Approved Applications

• Structural composite lumber (SCL) header applications requiring high loads
• Weld-on applications
• I-joist installations where web stiffeners are provided
• Engineered wood beam and joist connections requiring a strong top-flange hanger solution

Install With

• Install with (24) 0.162 in. x 3-1/2 in. Strong-Drive SCN Smooth-Shank Connector nails (Model: 16DHDG)

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What member size is the HGLTV418-2 designed to support?

The HGLTV418-2 is designed for a double 3-1/2 in. x 18 in. engineered wood member, making it suitable for large structural composite lumber (SCL) header applications.

What type of steel and gauge are used in this hanger?

The top flange is made from heavy-duty 3-gauge steel, while the stirrup is constructed from 7-gauge steel, providing the strength required for high-load applications.

Are web stiffeners required when using this hanger with I-joists?

Yes, web stiffeners are required with I-joists when using this hanger style. This is an important installation requirement to ensure structural integrity.

What fasteners are recommended for installing the HGLTV418-2?

Install with (24) 0.162 in. x 3-1/2 in. Strong-Drive SCN Smooth-Shank Connector nails (Model: 16DHDG) for a code-compliant and structurally sound connection.

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