Southwire L421 Straight Zinc Squeeze Box Connector 1/2 in

Product Description

The SOUTHWIRE L421 is a straight zinc squeeze-type conduit connector designed to secure electrical metallic tubing or flexible conduit to metal electrical boxes and enclosures. The squeeze mechanism allows for tool-free or minimal-tool installation, making it a practical choice for electricians working on residential and light commercial wiring projects. Built from zinc, this connector provides corrosion resistance suitable for indoor and protected outdoor applications. It is sized for 1/2 inch trade size conduit and meets the demands of everyday electrical rough-in work.

This connector is used in standard electrical box installations where a straight entry is required. Electricians install it when terminating conduit runs into junction boxes, utility boxes, or device boxes. It is well suited for residential panel feeders, branch circuit rough-in, and light commercial conduit work where a reliable, code-compliant termination is needed at box entry points.

Key Features

• Straight connector orientation for direct box entry
• Zinc construction provides corrosion resistance for indoor and protected installations
• Squeeze-type design speeds up installation and reduces labor time
• 1/2 inch trade size fits common conduit and tubing used in residential and light commercial work
• One year limited warranty from the manufacturer

Compatibility

Designed as an OEM-style replacement and standard-fitment connector for 1/2 inch trade size conduit and electrical metallic tubing terminations at metal electrical boxes and enclosures. Also referenced under Topaz part number 151TZ and Madison part number L-42-1.

Installation Notes

Installation is performed by licensed electricians in accordance with the National Electrical Code. De-energize all circuits and confirm the panel is locked out before beginning any box or conduit work. Insert the conduit fully into the connector before tightening the squeeze nut to ensure a secure, code-compliant termination. Do not over-tighten the retaining nut, as zinc fittings can crack under excessive force.

Technical Specifications

• Material: Zinc
• Trade Size: 1/2 inch
• Connector Style: Straight Squeeze
• Package Length: 19.2 inches
• Package Height: 5.6 inches
• Package Width: 11.2 inches
• Package Weight: 22.05 pounds
• Warranty: One Year Limited
• Country of Origin: Indonesia

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: L421