Arlington Industries FSR404BL Nonmetallic Retrofit Wall Box

Product Description

The ARLINGTON INDUSTRIES FSR404BL is a nonmetallic retrofit surface mount wall box designed for 4x4 applications. It provides a clean, low-profile solution for adding or relocating electrical outlets, switches, and low-voltage devices without cutting into drywall or accessing the wall cavity. The nonmetallic construction resists corrosion and reduces the risk of electrical conductivity at the box surface. Electricians and low-voltage installers use this box to retrofit existing walls in both residential and light commercial settings where a recessed box is not practical.

This box is suited for surface mount installations on finished walls where an existing 4x4 junction box or device location needs to be extended or covered. Typical applications include adding devices to finished drywall, concrete block, or paneling without major demolition. It is commonly used in renovation and retrofit projects where access behind the wall is limited or not available.

Key Features

• Nonmetallic construction for corrosion resistance and electrical surface safety
• 4x4 footprint fits standard 4-inch square box locations
• Retrofit design installs directly over existing wall surfaces without wall opening
• Surface mount profile keeps wiring accessible for future service
• Sold individually per unit

Compatibility

Designed as an OEM-style retrofit replacement and extension for standard 4x4 surface mount wall box applications in residential and light commercial electrical installations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the circuit at the breaker panel and verify with a non-contact voltage tester before beginning work. Secure the box firmly to the wall surface using appropriate fasteners for the substrate type. Do not over-tighten fasteners, as this may crack or distort the nonmetallic housing.