Southwire L425 Snap-in Blank Steel Squeeze Connector

Product Description

The SOUTHWIRE L425 is a snap-in blank steel fitting designed as a 1-1/2 inch squeeze-type connector for use in electrical box and conduit applications. It fills unused knockouts in electrical enclosures, junction boxes, and panels, preventing debris ingress and maintaining code-compliant closure of open ports. The steel construction provides durability suitable for standard commercial and residential wiring environments. Installation requires no tools beyond hand pressure in most applications, making it a fast, reliable solution for electricians closing out panels and junction boxes on any job site.

This snap-in blank is suited for residential and light commercial electrical work wherever unused 1-1/2 inch knockouts need to be sealed. It is a direct replacement for Topaz 155 and Madison L-42-5 style blanks, making it a common cross-reference item for electrical distributors and field technicians sourcing compatible fittings across multiple brands. Electricians and electrical contractors typically keep these on hand for panel and box closeout work during rough-in and trim stages.

Key Features

• Snap-in design allows fast, tool-free installation in standard 1-1/2 inch knockouts
• Steel construction for durability and code-compliant enclosure closure
• Seals unused knockouts to prevent debris, pests, and accidental contact
• Compatible cross-reference for Topaz 155 and Madison L-42-5 blanks
• Suitable for residential and light commercial electrical enclosures and junction boxes

Compatibility

Listed as a replacement for Topaz 155 and Madison L-42-5 snap-in blanks. Designed for standard 1-1/2 inch knockout openings in electrical panels, junction boxes, and enclosures.

Installation Notes

De-energize the panel or enclosure and follow applicable NFPA 70 (NEC) lockout/tagout procedures before servicing any electrical box or panel. Align the blank with the knockout opening and press firmly until the retaining tabs seat fully. Inspect the fit to confirm the blank is flush and secure before restoring power. Installation should be performed by a qualified electrician in accordance with local electrical codes.

Technical Specifications

• Material: Steel
• Knockout Size: 1-1/2 inches
• Package Length: 17.5 inches
• Package Height: 4.1 inches
• Package Width: 10.6 inches
• Package Weight: 9.25 pounds
• Warranty: One Year Limited
• Country of Origin: China

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: L425