Simpson Strong-Tie MIT411.88 — Top-Flange I-Joist Hanger

The MIT411.88 joist hanger is a heavy-duty top-flange hanger engineered to connect 3-1/2″ × 11-7/8″ engineered-wood I-joists to headers or beams at a 90° angle. It offers a reliable, concealed connection ideal for residential, multi-family, and commercial floor framing, delivering strong support and fast installation with minimal height build-up.

• Top-Flange Design for Flush Installation: The top-flange profile allows the joist to sit flush with the header or beam, creating a clean, secure connection suitable for floor joist framing.
• Designed for I-Joists: Specifically shaped to accommodate 3-1/2″ × 11-7/8″ engineered I-joists.
• Positive-Angle Nailing (PAN): Nail holes are angled to minimize splitting of the I-joist flanges, while speeding up installation and preserving wood integrity.
• Optional Uplift Holes: Additional triangular nail holes permit enhanced uplift resistance — useful if uplift loads or seismic/wind loads are a concern.
• Durable Steel Construction: Made from 16-gauge steel for strength and long-term structural integrity
• Galvanized Finish (G90): Zinc-coated finish helps resist corrosion in dry indoor environments — suitable for standard floor framing.
• Cost-Effective Alternative: Compared to heavy welded hangers, this stamped hanger provides a dependable 90° joist-to-header connection at a lower cost.

• Residential floor framing using engineered I-joists
• Multi-family wood-frame construction with repetitive joist spacing
• Commercial wood floor systems requiring efficient hanger placement
• Flush-beam floor systems where low profile and load-bearing strength are needed
• Projects needing uplift resistance (when triangle uplift holes are used + appropriate web stiffeners)