Eaton Crouse-Hinds 4" Square Extension Ring, 1-1/2" Deep, Steel, Welded

Eaton Crouse-Hinds 4" Square Extension Ring, 1-1/2" Deep, Steel, Welded

Professional-Grade Switch Box Extension with 21 Cubic Inch Capacity

The Eaton Crouse-Hinds 4" Square Extension Ring is a professional-grade steel extension ring engineered specifically for switch box applications. This welded steel extension ring delivers reliable depth extension and generous wiring capacity for commercial and industrial electrical installations requiring additional space for connections and devices.

Key Features & Benefits

Superior Construction & Durability

• Welded Steel Construction - Provides exceptional strength and dimensional stability for long-term reliability
• Professional-Grade Materials - Steel construction ensures superior durability compared to stamped alternatives
• Precision Manufacturing - Consistent dimensions and square tolerances for perfect alignment with switch boxes
• Corrosion Resistant Finish - Steel construction with protective finish for extended service life

Generous Wiring Capacity

• 21.0 Cubic Inch Capacity - Ample space for wire connections, splices, and device mounting
• 1-1/2" Extension Depth - Provides significant additional depth for complex wiring configurations
• Multiple Knockout Options - Eight 1/2" knockouts, four additional 1/2" knockouts, and one 3/4" knockout for flexible conduit connections
• Switch Box Compatibility - Specifically designed for use with switch boxes, not 4-square boxes

Installation Efficiency

• Standard 4" Square Footprint - Compatible with existing switch box installations and mounting hardware
• Pre-Punched Knockouts - Multiple conduit entry options reduce field preparation time
• Welded Corner Construction - Eliminates sharp edges and provides smooth wire pulling
• NEC/CEC Compliant Design - Meets code requirements for box fill calculations and installation practices

Technical Specifications

This extension ring features a standard 4" x 4" square footprint with 1-1/2" extension depth, providing 21.0 cubic inches of additional wiring capacity. The welded steel construction includes thirteen total knockout options: eight 1/2" knockouts, four additional 1/2" knockouts, and one 3/4" knockout for comprehensive conduit connection flexibility. The unit weighs 0.5 pounds and is specifically engineered for switch box applications rather than 4-square box installations. Construction meets NEC/CEC standards for ordinary/non-hazardous locations with professional-grade steel materials and welded corner joints.

Installation Process

1. Verify switch box compatibility and mounting surface preparation
2. Remove required knockouts using appropriate knockout tools for planned conduit connections
3. Position extension ring squarely on existing switch box, ensuring proper alignment
4. Secure extension ring to switch box using appropriate fasteners through mounting holes
5. Install conduit connections through selected knockouts with proper fittings
6. Complete wiring connections within the extended cavity, observing NEC/CEC box fill requirements
7. Install devices or cover plates as required for the specific application

Applications

Perfect for:

• Commercial Switch Installations - Office buildings, retail spaces, and institutional facilities requiring additional wiring space
• Industrial Control Applications - Manufacturing facilities and processing plants with complex switching requirements
• Renovation Projects - Upgrading existing electrical systems where additional depth is needed for modern devices
• Multi-Gang Switch Assemblies - Complex switching arrangements requiring extra space for wire management
• High-Density Wiring Areas - Locations with multiple circuits converging at switch points
• Code Compliance Upgrades - Meeting current NEC/CEC box fill requirements in existing installations
• Device Mounting Extensions - Accommodating deeper devices or those requiring additional clearance
• Conduit Transition Points - Areas requiring multiple conduit connections with organized wire management

Extension Ring System Benefits

Extension rings provide a cost-effective solution for increasing wiring capacity without replacing entire electrical boxes. This approach reduces installation time, minimizes wall damage during renovations, and allows contractors to meet current code requirements while working with existing infrastructure. The additional cubic inch capacity ensures compliance with NEC/CEC box fill calculations while providing organized space for wire splices and device connections.

Why Choose Welded Steel Construction?

Welded steel construction offers superior strength and dimensional stability compared to stamped alternatives, ensuring the extension ring maintains its shape under installation stress and long-term service conditions. The welded corners eliminate sharp edges that could damage wire insulation during installation, while the steel material provides excellent grounding continuity and resistance to impact damage. This professional-grade construction approach delivers the reliability electrical contractors demand for commercial and industrial applications.