The Simpson MIU1.81/9 Face-Mount I-Joist Hanger is a professional-grade connector from Simpson engineered specifically for commercial and high-load I-joist applications. Built to provide reliable support underneath the joist without requiring web stiffeners, this face-mount hanger creates a strong, secure connection for engineered wood members. Its positive-angle nailing design and 16-gauge galvanized steel construction make it a dependable choice for contractors working with dimensional I-joist framing in demanding structural environments.

Key Features

• Positive-angle nailing minimizes splitting of the flanges while permitting time-saving nailing from a better angle - drivers sit at a more natural position during installation, reducing flange damage and speeding up the nailing process on busy job sites.
• Designed for commercial and high-load I-joist applications without requiring web stiffeners - simplifies installation by eliminating extra prep work, saving both materials and labor on high-demand structural connections.
• Accommodates actual joist sizes of 1-3/4 in. x 9-1/4 in. to 9-1/2 in. - provides a precise, consistent fit for standard engineered wood I-joist members across a range of depths within that tolerance.
• Made from 16-gauge steel - delivers the structural rigidity and load-handling capacity expected in commercial framing applications.
• Zinc galvanized G90 finish - provides enhanced corrosion resistance, helping the hanger hold up in environments where moisture exposure is a concern.
• These hangers cannot be modified - ensures the connection maintains its rated integrity as designed, protecting structural performance and code compliance on the job.

Why This Product

• Built for high-load engineered wood framing - the MIU series is purpose-designed for commercial I-joist applications, offering a face-mount solution that handles demanding loads without the added step of installing web stiffeners.
• Faster, smarter installation with positive-angle nailing - the PAN feature lets installers drive fasteners from a better angle, reducing the risk of splitting joist flanges and cutting down on time spent per connection.
• Corrosion-resistant G90 galvanized coating - the zinc galvanized finish adds a layer of protection against moisture and corrosion, making this hanger suitable for applications where long-term durability matters.
• Trusted Simpson Strong-Tie engineering, made in the United States - backed by one of the most recognized names in structural connectors, this hanger is manufactured to consistent quality standards that professionals rely on for code-compliant framing work.

Specifications

• MPN: MIU1.81/9
• Member Size: 1-3/4 in. x 9-1/4 in. to 9-1/2 in.
• Width: 1-13/16 in.
• Height: 8-13/16 in.
• Seat Depth: 2-1/2 in.
• Gauge: 16
• Coating/Finish: Zinc Galvanized, G90
• Install With: 0.162 in. x 3-1/2 in. nails and 0.148 in. x 1-1/2 in. nails (sold separately)
• Country of Origin: United States

Frequently Asked Questions

What type of joist is the MIU1.81/9 designed to support?

The MIU1.81/9 is designed for commercial and high-load I-joist applications. It accommodates engineered wood members with an actual joist size of 1-3/4 in. x 9-1/4 in. to 9-1/2 in. without requiring web stiffeners.

What fasteners should be used to install this hanger?

Install with 0.162 in. x 3-1/2 in. nails and 0.148 in. x 1-1/2 in. nails. Always use all specified fasteners as directed to achieve the rated load capacity.

What is positive-angle nailing (PAN) and why does it matter?

Positive-angle nailing is a design feature that positions the nail holes at an angle that reduces the risk of splitting the joist flanges during installation. It also allows the installer to drive nails from a more natural, efficient angle, saving time on the job.

Can the MIU1.81/9 hanger be field-modified to fit a different joist size?

No. These hangers cannot be modified. For a different joist size or configuration, select the appropriate Simpson Strong-Tie MIU series model sized for your specific application.

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