The 425-RB PexRite PEX/Copper/CTS Isolator Insert (3/4" Blue) is a through-stud tubing isolator designed to support and protect piping in metal stud installations. Made from durable polypropylene, it isolates PEX, copper, and CPVC tubing from direct contact with metal studs, helping reduce vibration, wear, and the kind of rattling noises that mysteriously appear after the drywall crew leaves. The blue color designates cold-water lines for quick identification, and the insert integrates with PexRite/HoldRite bracket systems to keep pipes properly aligned and protected inside the wall.
Country of Origin
Varies by production batch
Key Features / Specifications
- Model / Part Number: 425-RB
- System Compatibility: PEX, Copper, and CPVC tubing (CTS)
- Pipe Size: 3/4 in. CTS
- Product Type: Through-stud tubing isolator insert
- Material: Polypropylene
- Color: Blue (commonly used to identify cold water lines)
- Application: Isolation and positioning of tubing in metal stud installations
- Stud Compatibility: Fits 1-11/32 in. or 1-3/8 in. round cutouts in 14–25 gauge sheet-metal studs
- Bracket Compatibility: Designed to integrate with PexRite / HoldRite #121 and #125 series brackets
- Temperature Range: -10°F to 180°F
- Fire Rating / Compliance: UL 94 V-2 flame rated, UPC / IPC / IAPMO compliant
- Design Feature: Off-center hole allows tubing crossovers without extra fittings
- Purpose: Prevents dissimilar metal contact, helping reduce vibration, noise, and long-term pipe wear
Ideal For
- PEX, copper, or CPVC plumbing runs through metal studs
- Cold-water supply lines needing quick visual identification
- Installations using PexRite / HoldRite bracket systems
- Projects requiring pipe isolation to reduce vibration and noise
- Plumbers who like their piping quiet, protected, and exactly where they installed it—because pipes should carry water, not perform percussion behind the drywall.