Eaton Crouse-Hinds 4" Steel Octagon Outlet Box Extension Ring, 15.5 Cu In

Eaton Crouse-Hinds 4" Steel Octagon Outlet Box Extension Ring

Professional-Grade Extension Ring for Fixture-Rated Electrical Installations

The Eaton Crouse-Hinds 4" Steel Octagon Outlet Box Extension Ring is a fixture-rated electrical component engineered for commercial and industrial wiring applications. This heavy-duty steel extension ring delivers reliable performance and code compliance for electrical contractors requiring additional box depth and generous wire capacity in octagon outlet installations.

Key Features & Benefits

Superior Wire Management

• 15.5 Cubic Inch Capacity - Generous wire fill allowance accommodates multiple circuits and connections per NEC requirements
• Multiple Conduit Knockouts - Features (3) 1/2" and (2) 3/4" knockouts for flexible conduit routing and circuit distribution
• Extension Ring Design - Provides additional depth when mounting fixtures or devices require extra clearance
• Octagon Configuration - Standard 4" octagon shape ensures compatibility with ceiling fixtures and junction applications

Professional Construction Quality

• Heavy-Duty Steel Construction - Robust steel material provides superior strength and durability compared to lightweight alternatives
• Fixture-Rated Performance - Engineered to support ceiling fixtures and electrical devices safely and securely
• Precision Manufacturing - Crouse-Hinds quality ensures consistent dimensions and reliable knockout removal
• Corrosion Resistance - Steel construction with protective finish resists environmental degradation

Code Compliance & Safety

• NEC/CEC Compliant - Meets National Electrical Code and Canadian Electrical Code requirements for outlet box installations
• Ordinary Location Rated - Approved for standard commercial and industrial electrical environments
• Professional Grade Standards - Manufactured to electrical industry specifications for contractor reliability

Technical Specifications

This extension ring measures 4" across in standard octagon configuration with 1.5" depth for additional wire space. The steel construction provides 15.5 cubic inches of wire fill capacity, accommodating multiple 1/2" and 3/4" trade size conduit connections. The unit weighs 0.36 pounds and features knockout openings positioned for optimal conduit routing. NEC/CEC compliance ensures code-approved installations in ordinary/non-hazardous locations.

Installation Process

1. Select appropriate mounting location ensuring adequate structural support for fixture load
2. Remove required knockouts using proper knockout tools for clean, burr-free openings
3. Install conduit connectors in knockout openings, ensuring proper thread engagement
4. Secure extension ring to existing octagon box or mounting surface using appropriate fasteners
5. Route conductors through conduit connections, maintaining proper bend radius requirements
6. Complete wire connections following NEC wire fill calculations and grounding requirements

Applications

Perfect for:

• Ceiling Fixture Installations - Commercial lighting, pendant fixtures, and ceiling-mounted electrical devices
• Junction Box Extensions - Adding depth to existing octagon boxes for wire management and connections
• Commercial Buildings - Office complexes, retail spaces, and institutional facilities requiring fixture support
• Industrial Facilities - Manufacturing plants, warehouses, and processing facilities with overhead electrical needs
• Renovation Projects - Upgrading existing electrical systems where additional box depth is required
• Multi-Circuit Applications - Installations requiring multiple conduit connections and generous wire capacity
• Code Upgrade Projects - Bringing older installations into compliance with current NEC/CEC requirements
• Heavy Fixture Support - Applications where fixture weight requires robust mounting and support systems

Extension Ring System Benefits

Extension rings provide critical additional depth when standard outlet boxes lack sufficient wire capacity or when fixture mounting requires extra clearance. This approach allows contractors to maintain code compliance while accommodating complex wiring configurations, multiple circuits, or oversized wire nuts. The modular design enables precise depth adjustment without replacing entire box assemblies, reducing installation time and material costs.

Why Choose Steel Construction?

Steel outlet box components offer superior strength and durability compared to plastic alternatives, especially critical in fixture-rated applications where structural integrity directly impacts safety. The robust steel construction resists impact damage during installation and provides reliable long-term performance in demanding commercial and industrial environments. Crouse-Hinds steel boxes maintain dimensional stability and knockout integrity throughout decades of service, making them the preferred choice of electrical professionals.