Arlington Industries FN104FD Vapor Box 4-gang Deep Nail Box

Product Description

The ARLINGTON INDUSTRIES FN104FD is a 4-gang deep vapor box designed for nail-in installation in new construction and retrofit applications. This electrical box provides an airtight, vapor-resistant enclosure for switches, receptacles, and other devices in exterior walls and ceilings where moisture and air infiltration control are required. Electricians install the FN104FD during rough-in framing stages by nailing directly to a stud or joist. The deep gang configuration accommodates multiple devices and their associated wiring in a single box assembly. Sold individually as a single unit.

The FN104FD is suited for residential and light commercial electrical installations where energy codes require airtight construction. Common applications include exterior walls, cathedral ceilings, and any framed cavity where vapor control is specified by building code. The nail-in mounting method speeds rough-in work in wood-frame construction, making it a practical choice for electricians working on new builds and energy-efficient retrofits.

Key Features

• 4-gang configuration accommodates multiple switches or receptacles in one box
• Deep profile provides additional wiring capacity behind devices
• Airtight vapor-resistant design supports energy-code compliance in framed assemblies
• Nail-in mounting for direct attachment to wood studs or joists during rough-in
• Single-unit packaging for precise job-site quantity control

Compatibility

Designed as an OEM-style replacement and new-construction solution for 4-gang nail-in electrical box applications in wood-frame residential and light commercial construction.

Installation Notes

Installation is performed by a licensed electrician during the rough-in framing stage before drywall. Power to the circuit must be off and verified with a non-contact voltage tester before any wiring connections are made. Nail-in tabs should be driven flush to the stud face to maintain proper box setback for finished wall thickness. Work must conform to NEC requirements for box fill, device mounting, and vapor control as applicable to the local jurisdiction.