Atkore B620HG-UPC Round Ceiling Box 20 Cu in 4 in Polycarbonate

Product Description

The ATKORE B620HG-UPC is a round ceiling electrical box designed for overhead fixture and device installations in residential and light commercial wiring applications. Molded from polycarbonate, this blue-tinted box offers a 20 cubic inch interior volume, a 4-inch diameter, and a depth of 2.25 inches. An integrated ground lug and ground screw are included, eliminating the need for a separate grounding pigtail. The adjustable bar hanger mounts between joists spaced from 11.5 inches to 14.5 inches apart, making it compatible with a wide range of framing layouts without requiring additional hardware.

This box is suited for new construction and retrofit ceiling installations where a round box is required for ceiling fans, light fixtures, or similar overhead devices. The polycarbonate construction resists corrosion in humid environments such as bathrooms, laundry rooms, and covered outdoor soffits. The adjustable hanger bar allows positioning between joists without cutting additional framing, streamlining rough-in work on residential and light commercial projects.

Key Features

• 20 cubic inch volume provides adequate wiring space for standard fixture connections
• 4-inch diameter fits standard ceiling medallions and canopies
• Polycarbonate construction resists moisture and corrosion
• Adjustable bar hanger spans 11.5 inches to 14.5 inches to fit varying joist spacing
• Integrated ground lug and screw for code-compliant grounding without extra components

Compatibility

Designed as an OEM-style replacement and new-construction round ceiling box for standard residential and light commercial overhead fixture installations requiring a 4-inch round box with adjustable bar hanger support.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements for outlet box fill calculations and grounding. De-energize the circuit at the breaker panel before beginning any wiring work. The bar hanger should be secured firmly between joists before attaching conductors to ensure the box supports the rated fixture load. Verify box fill compliance per NEC Article 314 based on the number and gauge of conductors installed.

Technical Specifications

• Volume: 20 cubic inches
• Diameter: 4 inches
• Depth: 2.25 inches
• Material: Polycarbonate
• Color: Blue
• Mounting: Adjustable bar hanger, 11.5 inches to 14.5 inches
• Grounding: Ground lug and screw included
• UPC: 03448101264

Standard Information

• Brand: ATKORE
• Manufacturer Part Number: B620HG-UPC