The Simpson LSSR Light Field-Adjustable Rafter Hanger is a patent-pending, next-generation connector engineered for 1-3/4 in. engineered wood members, delivering the kind of on-site flexibility that traditional rafter hangers simply cannot match. Its most distinctive advantage is the ability to be installed after all of the rafters have been tacked into place, eliminating the need to sequence hanger installation before framing and giving crews more freedom on the job site. Combining a flange design for skew adjustment up to 45 deg. with an innovative hinged swivel seat for slope adjustment up to 45 deg., this hanger handles a wide range of roof framing geometries from a single, field-adjustable connector. ZMAX galvanization provides extra corrosion resistance, making it well suited for exterior applications and use with pressure-treated lumber.

Key Features

• Post-installation capability - the hanger can be installed after rafters are already tacked in place, so crews are not locked into a rigid sequencing order and can save meaningful time in the field.
• Flange design for skew adjustment from 0 deg. to 45 deg. - accommodates angled framing conditions without requiring special-order parts or custom fabrication on site.
• Hinged swivel seat adjusts for slope up to 45 deg. - supports the joist securely while conforming to pitched roof geometry, reducing the need for field cutting or shimming.
• Made from 18-gauge steel - provides a reliable strength-to-weight ratio in a connector that stays manageable to handle and position during installation.
• ZMAX galvanization - delivers extra corrosion resistance beyond standard coatings, making this hanger appropriate for exterior environments and contact with treated wood where added protection matters.

Why This Product

• Unmatched installation flexibility - unlike conventional hangers that must go up before the rafters, this connector installs after the framing is tacked in place, reducing rework and keeping projects moving when sequencing does not go as planned.
• Dual-axis adjustability in a single connector - the combination of 45 deg. skew range and 45 deg. slope range means one hanger handles a wide variety of roof angles, cutting down on the number of SKUs a crew needs to stock for complex framing jobs.
• Built for exterior and treated-wood applications - ZMAX galvanization offers a higher level of corrosion resistance than standard finishes, making this hanger a dependable choice where moisture exposure or chemical contact with treated lumber is a concern.
• Engineered specifically for 1-3/4 in. engineered wood members - the precise fit eliminates slop in the connection and ensures consistent performance with LVL, LSL, and similar engineered lumber commonly used in modern roof framing.

Specifications

• MPN: LSSR1.81Z
• Actual Joist Width: 1-3/4 in.
• Minimum Joist Height: 9-1/2 in.
• Gauge: 18
• Coating/Finish: ZMAX
• Installation Fasteners: Install with 0.148 in. x 2-1/2 in. nails in the face and 0.148 in. x 1-1/2 in. nails in the joist (sold separately)
• Width: 1-13/16 in.
• Flange Width: 4-1/8 in.
• Height: 8-15/16 in.
• Country of Origin: United States

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

Can this rafter hanger be installed after the rafters are already tacked in place?

Yes. One of the key features of the LSSR1.81Z is that it can be installed after all of the rafters have been tacked into place, making it highly practical for field installation scenarios where sequencing flexibility is needed.

What is the maximum skew and slope adjustment range for this hanger?

The LSSR1.81Z is field adjustable for skew up to 45 deg. thanks to its flange design, and it features an innovative hinged swivel seat that adjusts for up to a 45 deg. slope, giving it a wide range of angular versatility on the job site.

What type of corrosion protection does the ZMAX coating provide?

ZMAX galvanization offers extra corrosion resistance, making this hanger suitable for exterior applications and use with treated wood where standard coatings may not provide adequate protection.

What fasteners should be used to install the LSSR1.81Z?

Install with 0.148 in. x 2-1/2 in. nails in the face and 0.148 in. x 1-1/2 in. nails in the joist for proper installation per the manufacturer's guidelines.

Note: Product dimensions and/or Nail or Screw holes may differ from picture. Please see item description for specifications.