Abb B618RR Round Old Work Ceiling Box 18 Cu in

Product Description

The ABB B618RR is a round old-work electrical ceiling box designed for retrofit installations in existing walls and ceilings where no new framing access is available. Rated at 18 cubic inches of internal volume with a 4.25-inch diameter, it provides adequate space for standard light fixture and fan-rated connections. The box is molded from polycarbonate, offering lightweight durability and resistance to impact during rough-in work. Electricians use swing clamp mounting to secure the box to drywall or plaster ceilings without requiring access to the structural cavity above. It ships in blue for easy identification on the job site.

This box is suited for residential and light commercial retrofit ceiling installations. Common applications include adding or replacing flush-mounted light fixtures, ceiling fan support, and junction boxes in finished spaces where cutting into finished surfaces is necessary. The swing clamp mechanism allows a single technician to install the box from below the ceiling surface, making it practical for occupied spaces and remodel projects where wall cavity access is limited.

Key Features

• 18 cubic inch internal volume provides conductor fill capacity for standard fixture connections
• 4.25-inch diameter fits standard ceiling cutout sizes used in retrofit work
• Swing clamp mounting secures to drywall or plaster from below with no attic access required
• Polycarbonate construction is lightweight, non-conductive, and impact resistant
• Blue color coding aids on-site identification during rough-in and inspection

Compatibility

Designed as an OEM-style replacement and new-installation option for round old-work ceiling box applications in residential and light commercial retrofit electrical projects.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements for box fill calculations and fixture support ratings. Shut off circuit power at the breaker panel and verify voltage absence with a non-contact tester before beginning work. Mark and cut the ceiling opening to the required diameter, feed conductors through the box knockouts, insert the box into the opening, and tighten the swing clamps until snug against the ceiling surface. Do not overtighten the clamps, as polycarbonate housings can crack under excessive fastener torque.

Technical Specifications

• Volume: 18 cubic inches
• Diameter: 4.25 inches
• Material: Polycarbonate
• Color: Blue
• Mounting Method: Swing Clamps
• Box Type: Round Old Work
• UPC: 034481194064

Standard Information

• Brand: ABB
• Manufacturer Part Number: B618RR