The Simpson MIU4.12/9 Face-Mount I-Joist Hanger from Simpson is an engineered face-mount connector purpose-built for commercial, high-load, and double I-joist applications, designed to accept a 4 in. x 9-1/2 in. I-joist. Built with structural performance and job-site efficiency in mind, this hanger streamlines the fastening process while maintaining the load capacity that demanding framing work requires.

Key Features

• Engineered for commercial, high-load, and double I-joist applications - tackles the structural demands of heavy-duty framing without requiring web stiffeners in standard installations, saving both materials and labor time on the job site.
• Positive-Angle Nailing (PAN) - allows nails to be driven at a more natural, ergonomic angle, reducing the risk of splitting I-joist flanges during fastening and helping crews work faster with greater confidence.
• Built-in speed prongs - temporarily position and hold the connector in place during installation, freeing up the installer's hands and reducing the chance of misalignment before nailing.
• Optional triangle joist nail holes - provide a path to additional uplift capacity when conditions call for it, giving this hanger flexibility across a wider range of structural requirements (note: properly attached web stiffeners are required when using these holes).
• 16-gauge steel with Zinc Galvanized G90 coating - delivers corrosion resistance suited to demanding construction environments, supporting long-term performance in the applications this connector is designed for.

Why This Product

• No web stiffeners needed for standard installations - fewer required components means faster assembly and lower overall material costs on commercial and high-load I-joist framing projects.
• Two built-in time-saving features work together - Positive-Angle Nailing (PAN) and speed prongs complement each other, making the installation process quicker and reducing the physical strain on framers driving fasteners throughout the day.
• Scalable uplift capacity - the option to use additional joist nails through the triangle nail holes means this face-mount hanger can be adapted to higher uplift demands without swapping to a different connector entirely.
• American-made construction - this I-joist hanger is a product of United States manufacturing, which can support project compliance requirements and quality expectations for commercial construction specifications.

Specifications

• Model Number: MIU4.12/9
• Joist Size: 4 in. x 9-1/2 in.
• Gauge: 16
• Width: 4-1/8 in.
• Height: 9-1/16 in.
• Seat Depth: 2-1/2 in.
• Coating/Material: Zinc Galvanized, G90
• Hanger Type: Face-Mount
• Country of Origin: United States

Frequently Asked Questions

Does the MIU4.12/9 require web stiffeners during installation?

In standard installations, the MIU hanger is designed for commercial, high-load, and double I-joist applications without requiring web stiffeners. However, properly attached web stiffeners are required when using the optional triangle joist nail holes for additional uplift capacity.

What is Positive-Angle Nailing (PAN) and why does it matter?

Positive-Angle Nailing (PAN) is a feature that allows installers to drive nails at a better, more natural angle. This minimizes the risk of splitting the I-joist flanges during fastening while also saving time by making the nailing process more efficient and ergonomic.

What is the uplift load capacity when additional joist nails are used with the MIU hanger?

For MIU models, adding four additional 10dx1-1/2 in. joist nails results in a total uplift load of 975 lbs. Always use all specified fasteners and verify that the header can accommodate the required fasteners as specified in the load table.

What coating does the MIU4.12/9 have, and what is it made of?

The MIU4.12/9 is constructed from 16-gauge steel with a Zinc Galvanized G90 coating, providing corrosion resistance suitable for demanding construction environments.

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