Eaton Crouse-Hinds 4" Square Extension Ring, 2-1/8" Deep, Steel, 30.3 Cubic Inch

Eaton Crouse-Hinds 4" Square Extension Ring, 2-1/8" Deep, Steel

Professional-Grade Steel Extension Ring for Increased Box Capacity

The Eaton Crouse-Hinds 4" Square Extension Ring is a professional-grade drawn steel extension ring engineered for commercial and industrial electrical installations. This 2-1/8" deep extension ring delivers 30.3 cubic inches of additional capacity for electrical contractors requiring expanded box volume for complex wiring configurations.

Key Features & Benefits

Superior Construction & Durability

• Drawn Steel Construction - Provides exceptional strength and dimensional stability for long-term reliability
• Precision Manufacturing - Ensures perfect alignment with standard 4" square boxes and covers
• Corrosion-Resistant Finish - Steel construction with protective coating for extended service life
• Professional-Grade Quality - Trusted by electrical contractors for over 100 years of proven performance

Flexible Conduit Entry Options

• Multiple Entry Sizes - Accommodates (8) 1/2" and (4) 3/4" conduit entries for versatile installation options
• Strategic Opening Placement - Optimized conduit entry positions for efficient wire routing and reduced installation time
• Clean Knockout Design - Precise knockouts ensure proper conduit fitting engagement and secure connections

Enhanced Electrical Capacity

• 30.3 Cubic Inch Capacity - Provides substantial additional volume for complex wiring applications
• NEC/CEC Compliant Design - Meets code requirements for conductor fill calculations and box capacity
• Improved Wire Management - Extra depth allows for proper wire bending radius and splice accessibility

Technical Specifications

This extension ring features a standard 4" square configuration with 2-1/8" depth, manufactured from drawn steel for superior strength and dimensional accuracy. The unit provides 30.3 cubic inches of additional electrical capacity and includes (8) 1/2" and (4) 3/4" conduit entry knockouts. Designed for ordinary/non-hazardous locations with NEC/CEC compliance, this extension ring weighs 0.66 pounds and measures 4" x 4" x 2.13" overall. The steel construction ensures long-term durability while maintaining cost-effectiveness for commercial installations.

Installation Process

1. Verify existing 4" square box is properly secured and meets load requirements for additional depth
2. Remove appropriate knockouts for planned conduit entries using proper knockout tools
3. Position extension ring on existing box, ensuring proper alignment of mounting holes
4. Secure extension ring to existing box using appropriate machine screws through mounting tabs
5. Install conduit fittings in selected knockouts, ensuring proper thread engagement
6. Route conductors through conduits and make connections within the expanded box volume
7. Install appropriate cover or device mounting ring to complete the installation

Applications

Perfect for:

• Commercial Buildings - Office complexes, retail spaces, and healthcare facilities requiring expanded box capacity
• Industrial Installations - Manufacturing facilities and processing plants with complex control wiring
• Educational Facilities - Schools and universities with extensive electrical distribution systems
• Municipal Projects - Government buildings and public infrastructure electrical systems
• Retrofit Applications - Upgrading existing installations where additional box volume is required
• Multi-Circuit Installations - Applications requiring multiple conduit entries and increased wire capacity
• Control Panel Extensions - Expanding junction box capacity for motor control and automation systems
• Distribution Upgrades - Electrical panel modifications requiring additional connection space

Extension Ring System Benefits

Extension rings provide a cost-effective solution for increasing electrical box capacity without complete box replacement. This approach reduces installation time, minimizes disruption to existing systems, and maintains code compliance while providing the additional volume needed for complex wiring configurations. The modular design allows for precise capacity matching to specific application requirements.

Why Choose Drawn Steel Construction?

Drawn steel construction offers superior dimensional accuracy and strength compared to stamped alternatives, ensuring consistent fit and long-term structural integrity. The manufacturing process creates uniform wall thickness and precise tolerances, resulting in reliable mounting alignment and professional installation appearance. This construction method, combined with Eaton Crouse-Hinds' century of electrical expertise, delivers the durability and performance electrical professionals demand for critical commercial and industrial applications.