Abb B108R-UPC Single Gang Old Work Shallow Pvc Box

Product Description

The ABB INSTALLATION PRODUCTS B108R-UPC is a single-gang, flanged, shallow PVC old work switch and outlet box designed for retrofit electrical installations in existing walls. Measuring 3.625 inches wide by 2.375 inches tall by 1.25 inches deep, it provides 8 cubic inches (CUIN) of interior volume. The flanged face plate holds the box flush against finished drywall without additional fasteners to the stud. Licensed electricians and experienced DIYers install this box when adding or relocating receptacles and switches in completed construction where wall cavities are already closed.

This box is suited for single-gang switch or outlet installations in residential and light commercial old work (retrofit) applications. It fits into cutouts made in standard drywall and similar finished wall surfaces. The shallow 1.25-inch depth is intended for tight wall cavities where a full-depth box will not fit. Its PVC construction resists corrosion and does not require grounding of the box body itself, which simplifies installation in non-metallic wiring systems.

Key Features

• Single-gang flanged design seats flush against finished wall surface for clean retrofit fit
• Shallow 1.25-inch depth accommodates tight or obstructed wall cavities
• 8 CUIN interior volume supports NEC box fill calculations for standard receptacle and switch installations
• PVC construction is non-conductive and corrosion resistant
• Old work design installs without wall stud access

Compatibility

Designed as an OEM-style replacement and standard retrofit option for single-gang switch and outlet installations in finished residential and light commercial wall assemblies using non-metallic wiring methods.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC Article 314 requirements for box fill and support. De-energize the circuit at the breaker panel and verify with a non-contact voltage tester before beginning work. Trace and cut the wall opening to the manufacturer-specified template size before inserting the box and securing the integrated retention wings. Verify box fill does not exceed 8 CUIN per NEC calculations before closing the rough-in.

Technical Specifications

• Box Volume: 8 CUIN
• Width: 3.625 inches
• Height: 2.375 inches
• Depth: 1.25 inches
• Material: PVC
• Gang Count: 1
• Box Type: Old Work (Retrofit), Flanged, Shallow
• Weight: 2.68 pounds
• Package Quantity: 25

Standard Information

• Brand: ABB INSTALLATION PRODUCTS
• Manufacturer Part Number: B108R-UPC