The Simpson RPS18 18-5/16 in. 16-Gauge Galvanized Retrofit Strap Tie is a purpose-built repair strap from Simpson Strong-Tie, engineered specifically for wood framing members where pipes, ducts, or HVAC components have been cut through or notched into wall assemblies. Fabricated from 16-gauge steel with a G90 zinc galvanized coating for lasting corrosion resistance, this retrofit plate strap fits on the narrow face of a 2x member and meets IBC, IRC, and City of Los Angeles code requirements for HVAC and pipes in walls - making it a dependable, code-compliant solution for both light repairs and heavy-duty structural reinforcement.

Key Features

• Repair strap for wood members where pipes and ducts are installed - directly addresses the most common framing vulnerability in mechanical and plumbing rough-in work, restoring structural integrity to cut or notched members
• Fits on the narrow face of a 2x member - designed to install flush against standard framing lumber without requiring additional clearance, keeping walls tight and finishes unaffected
• Fasten where plates or soles are cut, at wall intersections, or as a ridge tie - versatile enough to handle multiple connection scenarios across a single job site, reducing the need for multiple strap types
• Staggered nail pattern - optimizes fastener placement across the strap to distribute load evenly and reduce the risk of wood splitting during installation
• 16-gauge steel construction - provides the structural rigidity needed for heavy-duty framing repairs while keeping the strap slim enough to fit within wall assemblies
• G90 zinc galvanized coating - delivers enhanced corrosion resistance suited for interior wall environments where moisture from pipes or mechanical systems may be present
• Meets IBC, IRC, and City of Los Angeles code requirements for HVAC and pipes in walls - eliminates guesswork on inspected projects and ensures the repair holds up to scrutiny in both residential and commercial construction

Why This Product

• Code compliance built in - the RPS18 meets IBC, IRC, and City of Los Angeles requirements for HVAC and pipe-in-wall applications, so contractors and inspectors can move through inspections with confidence rather than scrambling for documentation
• Engineered for the exact problem it solves - unlike general-purpose straps pressed into service for mechanical rough-in repairs, this retrofit strap tie is specifically designed for wood members where pipes and ducts are installed, ensuring a proper fit on the narrow face of a 2x member without improvisation
• Multi-application versatility from one strap - whether reinforcing cut top plates, securing wall intersections, or serving as a ridge tie, the RPS18 handles a range of structural connection needs that would otherwise require stocking several different hardware items
• Durable finish for long-term performance - the G90 galvanized coating protects against corrosion in conditions common to plumbing and HVAC installations, supporting the long-term integrity of the framing repair without relying on additional surface treatments

Specifications

• Model Number: RPS18
• Gauge: 16
• Width: 1-1/2 in.
• Length: 18-5/16 in.
• Coating/Finish: Zinc Galvanized, G90
• Country of Origin: United States
• Installation Fasteners: (12) 0.162 in. x 2-1/2 in. nails (sold separately)

Approved Applications

• Reinforcing wood members where pipes or ducts have been cut through wall framing
• Fastening where plates or soles are cut during HVAC or plumbing installation
• Securing wall intersections requiring additional structural support
• Use as a ridge tie in applicable framing connections
• Code-compliant repair for IBC, IRC, and City of Los Angeles HVAC and pipe-in-wall applications

Frequently Asked Questions

What is the RPS18 designed to repair?

The RPS18 is a repair strap specifically designed for wood members where pipes and ducts are installed. It reinforces framing that has been cut or notched to accommodate HVAC components, plumbing pipes, or other mechanical systems within wall assemblies.

What fasteners are required to install the RPS18?

The RPS18 should be installed with (12) 0.162 in. x 2-1/2 in. nails. The strap features a staggered nail pattern to optimize fastener placement and load distribution across the connection.

Does the RPS18 meet building code requirements?

Yes. The RPS18 meets IBC, IRC, and City of Los Angeles code requirements for HVAC and pipes in walls, making it suitable for use in code-inspected residential and commercial construction projects.

How does the RPS18 fit on lumber, and what size member does it accommodate?

The RPS18 is designed to fit on the narrow face of a 2x member. With a width of 1-1/2 in. and a length of 18-5/16 in., it aligns precisely with standard dimensional lumber to provide a secure, flush connection at cut plates, soles, wall intersections, or ridge applications.

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