Abb B620K Round Ceiling Box 20 Cu in 4 in Pancake Bar Hanger

Product Description

The ABB B620K is a round ceiling electrical box with a 20 cubic inch capacity and a 4-inch diameter, designed for ceiling fan and light fixture installations. It ships with a pancake-style bar hanger that adjusts from 18.5 inches to 26.75 inches, allowing the box to span standard joist spacing without the need for exposed framing. The adjustable bar slides into the ceiling opening and locks against the joists, keeping the box flush with the ceiling surface. Licensed electricians install this box in new construction and retrofit ceiling applications where a code-compliant, fan-rated or fixture-rated mounting point is required.

This ceiling box is suited for residential and light commercial installations where a surface-mounted round box is needed for a ceiling fan, chandelier, or flush-mount light fixture. The adjustable bar hanger makes it practical for retrofit work — no attic access required. The 20 cubic inch interior provides adequate fill capacity for the conductor counts typical in branch-circuit ceiling drops.

Key Features

• 20 cubic inch box capacity supports standard conductor fill requirements
• 4-inch diameter round pancake-style profile keeps the box low-profile at the ceiling
• Adjustable bar hanger spans 18.5 inches to 26.75 inches for versatile joist spacing
• Bar hanger mounts through a ceiling cutout without requiring attic or above-ceiling access
• Designed for ceiling fan and light fixture mounting in branch-circuit ceiling drops

Compatibility

Designed as an OEM-style replacement and new-construction ceiling box for residential and light commercial branch-circuit ceiling fixture and ceiling fan mounting applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and applicable local codes. Turn off the branch circuit at the panel and verify absence of voltage before beginning any wiring work. The bar hanger is inserted through the ceiling cutout and expanded until both ends bear firmly against the joists before tightening. Confirm the box is rated for the weight of the fixture being supported before completing the installation.

Technical Specifications

• Box Capacity: 20 cubic inches
• Diameter: 4 inches
• Bar Hanger Adjustment Range: 18.5 inches to 26.75 inches
• Box Shape: Round
• Hanger Type: Pancake bar hanger
• UPC: 034481100850

Standard Information

• Brand: ABB
• Manufacturer Part Number: B620K