B120R Carlon Single Gang Old Work Mounting Box

The Carlon B120R Single Gang Old Work Mounting Box is a nonmetallic switch and outlet box engineered for fast, reliable installation in residential and light commercial applications. Built from non-conductive material, it's designed for use with nonmetallic sheath cable per National Electrical Code Article 370. This single gang box reduces excessive wiring runs, helping minimize tripping hazards while maintaining added reliability and flexibility. The Zip Box Blue design reflects Carlon's commitment to easier installation, superior performance, and lower labor costs—making it the contractor's trusted choice for retrofit and renovation projects where space and accessibility matter.