Arlington Industries FB443F Vapor Box Side Mount

Product Description

The ARLINGTON INDUSTRIES FB443F is a side-mount vapor box designed for electrical rough-in work in vapor barrier wall assemblies. This fitting provides a secure, airtight mounting point for electrical boxes in exterior and energy-efficient wall systems where maintaining the vapor barrier is required. It is installed by licensed electricians during new construction or retrofit projects where code compliance for air sealing and vapor control is a priority. The FB443F is sold as an individual unit and is a standard hardware accessory in electrical rough-in applications.

The FB443F is used in residential and light commercial construction where vapor barriers are part of the wall assembly. It is appropriate for exterior wall installations, energy-efficient building envelopes, and any application where an electrical box penetration must be sealed against air and vapor infiltration. Electricians use this fitting to maintain the integrity of the building envelope while providing a compliant electrical box mounting solution.

Key Features

• Side-mount design for installation through vapor barrier wall assemblies
• Maintains vapor barrier integrity at electrical box penetrations
• Sold as a single unit for targeted replacement or new installation
• Suitable for residential and light commercial rough-in applications

Compatibility

Designed as an OEM-style replacement and new-construction fitting for side-mount vapor box applications in standard vapor barrier wall assemblies.

Installation Notes

Installation should be performed by a qualified electrician in accordance with applicable NEC requirements and local building codes. De-energize all circuits in the work area before beginning installation. Ensure the vapor barrier is properly sealed around the fitting after installation to maintain air and vapor control performance. Consult the manufacturer instructions for proper fastening and sealing procedures.