Eaton Crouse-Hinds 4" Square Extension Ring, Drawn Steel, 1-1/2" Deep, 21 Cu In, with 1/2" & 3/4" Knockouts

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

Professional-Grade Steel Extension Ring for Increased Box Capacity

The Eaton Crouse-Hinds 4" Square Extension Ring is a professional-grade steel extension ring engineered to increase electrical box capacity and accommodate additional wiring connections. This drawn steel extension ring delivers 21 cubic inches of additional capacity with multiple conduit entry options for commercial and industrial electrical installations.

Key Features & Benefits

Superior Construction & Durability

• Drawn Steel Construction - Provides exceptional strength and dimensional stability for long-term reliability
• Professional-Grade Materials - Engineered to withstand demanding commercial and industrial environments
• Precision Manufacturing - Ensures perfect alignment with standard 4" square boxes and covers
• Corrosion Resistant Finish - Steel construction with protective coating for extended service life

Flexible Conduit Entry Options

• Multiple Entry Sizes - Accommodates both 1/2" and 3/4" conduit connections in single extension ring
• Eight 1/2" Knockouts - Provides maximum flexibility for smaller conduit runs and cable entries
• Four 3/4" Knockouts - Accommodates larger conduit sizes for high-capacity wiring systems
• Strategic Knockout Placement - Optimized positioning allows efficient conduit routing from multiple directions

Installation Efficiency

• Standard 4" Square Compatibility - Seamlessly integrates with existing electrical box systems
• 1-1/2" Extension Depth - Provides substantial additional capacity without excessive projection
• Clean Knockout Removal - Precision-formed knockouts remove cleanly for professional installations
• Secure Mounting Design - Ensures solid connection to existing boxes and covers

Technical Specifications

This extension ring features a standard 4" x 4" square profile with 1-1/2" extension depth, providing 21.0 cubic inches of additional capacity. The drawn steel construction includes eight 1/2" knockouts and four 3/4" knockouts for versatile conduit entry options. NEC/CEC compliant design ensures code compliance for ordinary/non-hazardous locations. The compact .46 lb weight facilitates easy handling during installation while maintaining structural integrity.

Installation Process

1. Verify existing 4" square box compatibility and mounting surface preparation
2. Remove required knockouts using appropriate knockout punch or driver
3. Position extension ring over existing box ensuring proper alignment
4. Secure extension ring to box using appropriate fasteners through mounting holes
5. Install conduit connections through selected knockout openings
6. Complete wiring connections within the extended capacity space
7. Install appropriate cover or device mounting to complete installation

Applications

Perfect for:

• Commercial Office Buildings - Expanding capacity for additional circuits in conference rooms and workspaces
• Industrial Control Panels - Providing extra space for control wiring and junction connections
• Retail Electrical Systems - Accommodating multiple conduit runs for lighting and power distribution
• Healthcare Facilities - Meeting high-density wiring requirements for medical equipment connections
• Educational Institutions - Supporting classroom technology and equipment wiring needs
• Manufacturing Facilities - Handling complex wiring configurations for production equipment
• Municipal Buildings - Upgrading existing electrical systems with additional capacity
• Data Center Applications - Managing power distribution and control wiring in high-density environments

Extension Ring System Benefits

Extension rings provide a cost-effective solution for increasing electrical box capacity without complete box replacement. This approach maintains existing mounting and conduit connections while adding the necessary space for additional wiring, devices, or junction requirements. The modular design allows for future expansion and modification as electrical system needs evolve.

Why Choose Drawn Steel Construction?

Drawn steel construction offers superior dimensional accuracy and structural integrity compared to stamped alternatives. The drawing process creates uniform wall thickness and precise corner radii, ensuring consistent fit with standard electrical components. This manufacturing method also provides enhanced strength characteristics, making the extension ring suitable for demanding commercial and industrial applications where reliability is critical.