Madison Electric ME Steel Plated Snap-In Blank 150 1/2″ (Box of ~100)

Overview

The Madison Electric 150 snap-in blank is a steel-plated conduit fitting designed to cap unused knockout holes in electrical boxes and enclosures. Constructed from a combination of 6/6 nylon and steel with a cadmium-plated finish, these fittings install with fingertip pressure and require no tools. This product is supplied in a convenient bulk box of approximately 100 units, making it ideal for electrical contractors, maintenance technicians, and system integrators managing large-scale installations or ongoing maintenance operations.

Key Features

• Cadmium plated steel construction for corrosion resistance and durability
• 6/6 nylon snap-in design—installs without tools or fasteners
• Fits 1/2″ knockout openings in standard electrical boxes and enclosures
• Bulk box of approximately 100 units for high-volume projects
• Compliant with standard conduit system practice for box/enclosure sealing

Technical Specifications

Typical Applications

• Sealing unused 1/2″ knockout holes in electrical junction boxes
• Closing conduit knockouts in control enclosures and cabinets
• Maintaining NEC-compliant box integrity and environmental protection
• Large residential, commercial, and industrial electrical installations
• Maintenance and retrofit work in existing electrical systems

Compatibility & Replacements

Compatible With

• Standard electrical junction boxes with 1/2″ knockouts
• Rigid and IMC conduit systems
• Electrical enclosures and control cabinets
• PVC and steel conduit box entries

Replaces / Drop-In Replacement For

• Madison Electric 150 (original specification)
• Southwire 150 snap-in blank (same manufacturer, alternative branding)

Works With

• All standard 1/2″ knockout conduit and box configurations
• Complies with National Electrical Code (NEC) requirements for box closure
• Integrates with complete Madison Electric snap-in blank line (151 3/4″, 152 1″, 153 1-1/4″, 154 1-1/2″)