Abb Installation Products B120R Single Gang Old Work Box 20 Cuin

Product Description

The ABB INSTALLATION PRODUCTS B120R is a single-gang old work electrical box rated at 20 cubic inches (CUIN), designed for retrofit and remodeling installations in existing construction. Built from high-impact PVC, the box delivers lightweight handling without sacrificing durability or fire resistance. At 4-1/8 inches long by 2-5/16 inches wide by 3-5/8 inches deep, it provides extra wire capacity suited for large wiring devices such as GFCI receptacles, decora switches, and USB outlets. Licensed electricians and skilled tradespeople install this box as part of branch-circuit rough-in work during remodeling projects.

The B120R is intended for use in existing residential and light commercial construction where walls are already finished. It fits into standard 2-inch by 4-inch stud-framed walls, making it a practical choice when adding outlets or switches without opening wall cavities extensively. The 20 CUIN volume accommodates the conductor fill requirements for larger devices and heavier wire gauges common in modern wiring installations.

Key Features

• 20 CUIN interior volume provides extra wire capacity for large wiring devices
• High-impact PVC construction for lightweight, durable performance
• Old work design installs in finished walls without full cavity access
• Fits standard 2-inch by 4-inch stud-framed wall construction
• UL Listed for fire resistance
• Single-gang configuration for standard receptacle and switch applications

Compatibility

Designed as an old work replacement and new-installation box compatible with standard single-gang wiring devices in existing residential and light commercial construction with 2-inch by 4-inch framed walls.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC requirements for outlet box fill calculations and device mounting. Always de-energize the circuit at the breaker panel and verify the absence of voltage with a meter before cutting the wall opening or pulling conductors. Secure all clamps and ensure the box is flush with the finished wall surface before installing the wiring device.

Technical Specifications

• Box Type: Single Gang Old Work
• Volume: 20 CUIN
• Dimensions: 4-1/8 inches x 2-5/16 inches x 3-5/8 inches deep
• Material: High-Impact PVC
• Wall Compatibility: Standard 2-inch x 4-inch constructed wall
• Certification: UL Listed for Fire Resistance
• Package Quantity: 50 per package
• Unit of Measure: EA
• Weight: 11.9 pounds

Standard Information

• Brand: ABB INSTALLATION PRODUCTS
• Manufacturer Part Number: B120R