Eaton Crouse-Hinds 4" Octagon Extension Ring, Steel, 1-1/2" Deep, 15.5 Cu In

Eaton Crouse-Hinds 4" Octagon Extension Ring

Professional-Grade Steel Extension Ring for Fixture Mounting Applications

The Eaton Crouse-Hinds 4" Octagon Extension Ring is a heavy-duty steel extension ring engineered for professional electrical installations requiring additional box depth. This fixture-rated extension ring delivers 15.5 cubic inches of capacity with 1-1/2" depth extension for commercial and industrial lighting applications.

Key Features & Benefits

Superior Construction & Durability

• Heavy-duty steel construction - Provides exceptional strength and long-term reliability in demanding environments
• Precision-formed octagon design - Ensures perfect alignment with standard 4" octagon outlet boxes
• Fixture-rated performance - Engineered to support ceiling fixtures and heavy electrical devices safely
• Corrosion-resistant finish - Steel construction with protective coating for extended service life

Installation Flexibility & Code Compliance

• Four 1/2" conduit knockouts - Multiple entry options for flexible conduit routing and connections
• 15.5 cubic inch capacity - Generous wire fill capacity meets NEC requirements for complex wiring configurations
• 1-1/2" extension depth - Provides additional space for wire connections and device mounting
• NEC/CEC compliant design - Meets all applicable electrical codes for safe installation

Professional Installation Advantages

• Universal compatibility - Works with standard 4" octagon outlet boxes from all major manufacturers
• Secure mounting system - Robust connection ensures permanent, vibration-resistant installation
• Clean professional appearance - Smooth steel finish provides attractive final installation

Technical Specifications

This extension ring features a standard 4" octagon configuration with 1-1/2" depth extension, constructed from heavy-duty steel with protective finish. The unit provides 15.5 cubic inches of additional capacity and includes four 1/2" conduit knockouts for flexible wiring options. Designed for fixture-rated applications, it meets NEC/CEC compliance standards for commercial and industrial installations. Dimensions are 4" width x 4" length x 1.5" height, with a lightweight 0.36 lb construction for easy handling during installation.

Installation Process

1. Verify existing 4" octagon outlet box is properly secured and meets load requirements
2. Remove appropriate knockouts from extension ring based on conduit entry requirements
3. Position extension ring over existing outlet box, ensuring proper alignment of mounting holes
4. Secure extension ring to outlet box using appropriate machine screws (typically 8-32 x 1/2")
5. Install conduit connections through selected knockouts with appropriate connectors
6. Complete wiring connections within the extended box space, observing NEC fill requirements
7. Install fixture or device mounting hardware as required for specific application

Applications

Perfect for:

• Ceiling fixture installations - Pendant lights, chandeliers, and heavy lighting fixtures requiring additional mounting depth
• Commercial lighting systems - Office buildings, retail spaces, and institutional facilities
• Industrial applications - Manufacturing facilities, warehouses, and processing plants
• Junction box extensions - Complex wiring configurations requiring additional wire space
• Retrofit installations - Upgrading existing electrical systems with modern fixtures
• Fan mounting applications - Ceiling fans requiring additional box depth for secure mounting
• Emergency lighting systems - Exit signs and emergency fixtures in commercial buildings
• Conduit system extensions - Adding depth for complex conduit routing and connections

Extension Ring System Benefits

Extension rings provide a cost-effective solution for increasing outlet box capacity without replacing existing electrical boxes. They allow contractors to adapt standard installations for heavier fixtures, complex wiring configurations, or code compliance requirements. The additional cubic inch capacity ensures adequate wire fill space while maintaining proper electrical safety standards. This approach reduces installation time and material costs compared to complete box replacement.

Why Choose Steel Construction?

Steel extension rings offer superior strength and durability compared to plastic alternatives, making them ideal for fixture-rated applications supporting significant weight. The steel construction provides excellent grounding continuity, essential for electrical safety in commercial and industrial installations. Eaton Crouse-Hinds steel extension rings are engineered for decades of reliable service, backed by over 100 years of electrical innovation and trusted by professional contractors nationwide.