Crouse-Hinds 4" Steel Square Extension Ring 2-1/8" Deep with Conduit Knockouts

Crouse-Hinds 4" Steel Square Extension Ring 2-1/8" Deep with Conduit Knockouts

Professional electrical box extension for increased wiring capacity

The Crouse-Hinds 4" Steel Square Extension Ring provides reliable electrical box extension with 2-1/8" depth and 30.3 cubic inches of capacity. Constructed from drawn steel for durability in ordinary/non-hazardous locations, this extension ring features multiple conduit knockouts for versatile wiring configurations and meets NEC/CEC standards for professional electrical installations.

Professional Features & Benefits

• 30.3 Cubic Inch Capacity: Provides ample space for wire connections and electrical components in extended installations.
• 2-1/8" Depth: Offers optimal extension depth for accommodating additional wiring while maintaining compact profile.
• Drawn Steel Construction: Ensures long-lasting durability and structural integrity in demanding electrical applications.
• Multiple Knockout Configuration: Features (8) 1/2" and (4) 3/4" knockouts for flexible conduit entry options.
• 4" Square Design: Standard sizing ensures compatibility with existing electrical box systems and mounting hardware.
• NEC/CEC Compliance: Meets national and Canadian electrical code requirements for safe professional installation.
• Lightweight Design: At 0.66 lb, provides easy handling and installation without compromising structural strength.

Technical Specifications

• Area Classification: Ordinary/Non-Hazardous Locations
• Box Size: 4"
• Capacity: 30.3 cubic in
• Construction: Drawn
• Depth: 2-1/8"
• Product Height: 2.13 in
• Product Length Depth: 4 in
• Product Material: Steel
• Product Weight: .66 lb
• Product Width: 4 in
• Side Knockouts: (8) 1/2 in, (4) 3/4 in
• Standards Type: NEC/CEC

Installation & Operation

1. Mount the extension ring in a suitable location with appropriate clearance and access for connections and service.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Residential electrical box extensions for additional wiring capacity
• Commercial building electrical installations requiring extended depth
• Industrial facility electrical system modifications
• Retrofit applications where additional wire space is needed
• Multi-unit residential electrical upgrades
• Professional electrical contractor installations
• Maintenance and repair applications requiring code-compliant extensions

Why Choose Crouse-Hinds Quality?

Crouse-Hinds delivers professional-grade electrical components with drawn steel construction and NEC/CEC compliance. This extension ring provides reliable performance in ordinary locations with durable materials and precise manufacturing for long-term electrical system integrity.