Round 4" Ceiling Box Extender by Arlington Industries – Electrical Box Extension

The Round 4" Ceiling Box Extender, model BE1R by Arlington Industries, is designed to extend set back metal or non-metallic electrical boxes up to 1-1/2 inches. This plastic extender fits 3-1/2" and 4" round or octagonal ceiling boxes, providing a flush, fully supported wiring device that is ideal for use in lighting solutions and electrical distributor applications. It supports standard switches, receptacles, and GFCIs, ensuring compliance with NEC 2017 article 314.20 for set back boxes. The extender is suitable for use in wire and cable installations and by switchgear suppliers needing to address box setback issues in ceilings.

Specifications

• Manufacturer Part #: BE1R
• Material: Plastic
• Color: White
• Fits: 3-1/2" and 4" round or octagonal ceiling boxes
• Extension Depth: 1.5 inches
• Dimensions: Diameter approx. 4.35 inches, Outer Diameter approx. 4.85 inches
• Product Weight: 0.0600 lbs
• UPC: 018997401618
• Compliance: NEC 2017 article 314.20
• Fire Rating: 2-hour

Features

• Non-conductive plastic construction prevents arcing and shorting in metal boxes
• Trimmable design for shallow boxes or obstructions
• Provides a level, fully supported wiring device flush with the wall or ceiling surface
• Compatible with all standard devices, switches, and GFCIs
• Easy installation for extending set back electrical boxes
• Made in USA

Downloads & Links

• Specification Sheet
• BE1R Line Drawing
• Catalog Page