George Risk Industries PW-20-W 3/8 Inch Pre-wire Plug

Product Description

The George Risk Industries PW-20-W is a 3/8-inch pre-wire plug used to seal and protect pre-drilled wiring knockout openings in door and window frames, electrical enclosures, and security contact housings. The plug fills unused openings to block drafts, debris, and moisture ingress while maintaining a clean finished appearance. It ships as a single unit and is suited for installation by security technicians, electricians, and alarm system installers working on residential and light commercial projects where unused conduit or wiring ports require a low-profile cover solution.

This plug is designed for 3/8-inch pre-drilled openings commonly found in door and window frames prepared for magnetic contact or sensor wiring. It is a passive, non-electrical component used when a pre-wired opening is not occupied by a sensor or cable, keeping the installation neat and the opening sealed. It fits standard pre-wire hole configurations used in typical security and alarm contact installations.

Key Features

• Fits 3/8-inch pre-wired knockout openings
• Seals unused wiring ports against debris and moisture
• Low-profile plug design for a clean, finished appearance
• Single-unit packaging for targeted replacement or spot use
• Suitable for door frames, window frames, and security contact housings

Compatibility

Designed as an OEM-style fit for standard 3/8-inch pre-wire openings used in residential and light commercial door and window security contact installations.

Installation Notes

Installation requires no special tools. Press the plug firmly into the 3/8-inch pre-drilled opening until it seats flush with the surface. Ensure the opening is clean and free of debris before insertion. No electrical disconnect is required, as this is a passive mechanical component.