Simpson RPS18Z RPS 18-5/16 in. 16-Gauge ZMAX Galvanized Retrofit Strap Tie is a heavy-duty repair strap from Simpson Strong-Tie engineered for wood members where pipes and ducts are installed. Built from 16-gauge steel with ZMAX galvanization for superior corrosion resistance, this retrofit strap tie delivers reliable reinforcement on the narrow face of 2x lumber - making it an ideal solution for cut plates, wall intersections, and ridge tie applications in both exterior and treated-wood environments.

Key Features

• Repair strap for wood members where pipes and ducts are installed
• Fits on the narrow face of a 2x member
• Fasten where plates or soles are cut, at wall intersections or as a ridge tie
• Staggered nail pattern for optimized load distribution and fastener placement
• Made from 16-gauge steel for dependable structural strength
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
• Meets IBC, IRC and City of Los Angeles code requirements for HVAC and pipes in walls
• Made in the United States

Specifications

• Model Number: RPS18Z
• Width: 1-1/2 in.
• Length: 18-5/16 in.
• Gauge: 16
• Coating/Finish: ZMAX
• Country of Origin: United States

Approved Applications

• Reinforcing wood members where pipes and ducts have been installed through studs or plates
• Fastening where plates or soles are cut during installation of HVAC, plumbing, or electrical runs
• Use at wall intersections as a structural connector
• Ridge tie applications
• Exterior applications and connections involving treated wood, where corrosion resistance is required
• Projects subject to IBC, IRC, and City of Los Angeles code requirements for HVAC and pipes in walls

Install With

• Install with (12) 0.162 in. x 2-1/2 in. nails

Frequently Asked Questions

Where does the RPS18Z retrofit strap tie fit on a lumber member?

The RPS18Z is designed to fit on the narrow face of a 2x member, making it well-suited for tight framing situations where pipes, ducts, or other mechanical systems have been routed through studs or plates.

What type of galvanization does the RPS18Z have, and why does it matter?

The RPS18Z features ZMAX galvanization, which provides extra corrosion resistance compared to standard galvanized coatings. This makes it appropriate for exterior applications and connections involving treated wood, where standard hardware may be prone to corrosion over time.

What building codes does the RPS18Z meet?

The RPS18Z meets IBC, IRC, and City of Los Angeles code requirements for HVAC and pipes in walls, making it suitable for a wide range of compliant residential and commercial construction applications.

What fasteners should be used to install the RPS18Z?

The RPS18Z should be installed with (12) 0.162 in. x 2-1/2 in. nails. The strap features a staggered nail pattern to help ensure proper fastener placement and optimal load performance.

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