Legrand S1-20-JAC 4 Inch Round Ceiling Box

Product Description

The LEGRAND S1-20-JAC is a 4-inch round ceiling electrical box designed for use in standard ceiling fixture installations. This box provides a secure mounting point for light fixtures, fans, and other ceiling-mounted devices in residential and light commercial wiring applications. Its round profile conforms to common ceiling box configurations, making it a straightforward fit for new construction and retrofit projects. Licensed electricians and experienced electrical contractors typically handle installation as part of rough-in or fixture changeout work.

This ceiling box is suited for residential and light commercial applications where a standard 4-inch round ceiling-mount enclosure is required. It is commonly installed during new construction rough-in phases or during fixture replacement projects where an existing box must be updated or swapped. It serves as the termination and support point for ceiling electrical connections in living spaces, hallways, and similar areas.

Key Features

• 4-inch round profile matches standard ceiling box cutout dimensions
• Designed for ceiling-mounted fixture and device support
• Suitable for new construction and retrofit ceiling installations
• Compact form factor keeps installation clean within ceiling cavities

Compatibility

Designed as an OEM-style replacement or new-install option for standard 4-inch round ceiling electrical box applications in residential and light commercial wiring systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always shut off circuit power at the breaker panel and verify the circuit is de-energized with a non-contact voltage tester before beginning any wiring work. Ensure the box is rated for the weight of the fixture being supported before mounting. Do not exceed the box fill capacity as defined by NEC Article 314.

Technical Specifications

• Box Shape: Round
• Box Size: 4 inches
• Mounting Location: Ceiling
• Weight: 0.37 pounds
• UPC: 78500720695

Standard Information

• Brand: LEGRAND
• Manufacturer Part Number: S1-20-JAC