Product Description
The Simpson MIT3511.88-2 MIT Galvanized Top-Flange Joist Hanger for Double 2-5/16 in. x 11-7/8 in. Engineered Wood is a purpose-built metal connector from Simpson designed to support 90 deg. connections of I-joists to headers with maximum down load capacity and a minimum number of fasteners. Constructed from 16-gauge steel with a G90 zinc galvanized finish, this top-flange hanger is installed before the joist is placed, and its Funnel Flange design makes member placement faster and more straightforward on the job site. Purpose-engineered for engineered wood I-joists, it offers a reliable and cost-effective alternative to welded hangers in standard framing applications.
Key Features
- Positive-angle nailing (PAN) with intact nail hole material - nailing from a better angle saves installation time while the unremoved nail hole material minimizes flange splitting, protecting the structural integrity of the I-joist
- Funnel Flange design - guides the joist member into position before fastening, reducing fumbling and speeding up installation compared to standard hanger profiles
- Optional triangle nail holes for uplift capacity - gives you a path to increased uplift resistance when project conditions demand it, provided properly-secured web stiffeners are added alongside the optional uplift nailing
- Optional fastening with PAT for steel header applications - expands compatibility beyond wood headers so the same hanger can be used where steel framing is part of the assembly
- Cost-effective alternative to welded hangers - delivers engineered performance for standard 90 deg. I-joist-to-header connections without the added cost of custom welded hardware
- 16-gauge steel construction - provides the structural strength and rigidity needed to carry maximum down loads in engineered wood framing systems
- G90 zinc galvanized finish - adds a durable corrosion-resistant coating suited for the moisture exposure common in residential and light commercial framing environments
Why This Product
- Built specifically for engineered wood I-joists - the PAN feature and Funnel Flange design are engineered around the unique geometry and splitting sensitivity of I-joist flanges, making this hanger a more compatible fit than a generic connector for these members
- Fewer fasteners without sacrificing load capacity - the MIT design achieves maximum down load performance while keeping fastener count low, which translates directly to faster installations and reduced labor on the job site
- Flexible enough to handle uplift and steel header conditions - the optional triangle nail holes and PAT fastening compatibility mean this single hanger can adapt to a wider range of structural and material requirements without switching to a different product
- American-made with a corrosion-resistant finish - 16-gauge steel construction combined with a G90 galvanized coating delivers durable, long-term performance in framing applications where both strength and moisture resistance matter
Specifications
- MPN: MIT3511.88-2
- Member Size: Double 2-5/16 in. x 11-7/8 in.
- Width: 4-3/4 in.
- Height: 11-7/8 in.
- Seat Depth: 2-1/2 in.
- Top Flange: 2-5/16 in.
- Gauge: 16
- Coating/Finish: Zinc Galvanized, G90
- Country of Origin: United States
- Installation: Install with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 1-1/2 in. nails in the joist (sold separately)
Options
- Contact us for Configurable Options and Special orders
Note: Product dimensions may differ from picture. Please see the item description above for specifications.
Frequently Asked Questions
What is positive-angle nailing (PAN) and why does it matter for I-joists?
Positive-angle nailing (PAN) is a feature specifically created for I-joists that allows nailing from a better angle, saving time during installation. Importantly, the nail hole material is not removed with PAN, which minimizes splitting of the flanges and helps maintain the structural integrity of the I-joist.
What size joists is the MIT3511.88-2 designed to support?
The MIT3511.88-2 is designed to support a double 2-5/16 in. x 11-7/8 in. engineered wood I-joist member.
What fasteners are required to install this joist hanger?
Install with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 1-1/2 in. nails in the joist. For steel header applications, optional fastening with PAT is also available.
Can the MIT3511.88-2 be used where increased uplift capacity is needed?
Yes. The optional triangle nail holes on the MIT3511.88-2 may be used for increased uplift capacity. However, optional uplift nailing requires the addition of properly-secured web stiffeners to be effective.
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