Abb A420 Two-gang Blank Box Cover 4 in Square

Product Description

The ABB A420 is a two-gang blank box cover designed to close off 4-inch square electrical boxes with a 0.5-inch raised profile. Made from non-metallic material and finished in blue, this cover is used when a box position requires a clean, code-compliant closure without a device installed. The 6.1 cubic inch volume designation aligns with standard box-fill calculations under NEC guidelines. Electricians install this cover during new construction, renovation work, or any situation where a junction or device box must be sealed and identified.

This cover fits standard 4-inch square electrical boxes requiring a 0.5-inch raised, two-gang blank cover. It is suited for residential and light commercial wiring applications where non-metallic covers are acceptable per local code. The blue color aids in quick visual identification of box locations during rough-in and inspection phases. It is a common choice for concealed junction points in wall and ceiling assemblies.

Key Features

• 4-inch square footprint fits standard 4-inch square electrical boxes
• 0.5-inch raised profile accommodates box setback from finished surface
• Two-gang blank configuration with no device openings
• Non-metallic construction resists corrosion in dry interior environments
• 6.1 cubic inch internal volume for NEC box-fill compliance calculations
• Blue color for fast visual identification during installation and inspection

Compatibility

Designed as an OEM-style replacement or new-installation cover for standard 4-inch square electrical boxes requiring a two-gang blank, 0.5-inch raised non-metallic cover.

Installation Notes

A licensed electrician should install this cover in accordance with NEC Article 314 requirements for box closures and fill calculations. De-energize the circuit and verify absence of voltage before opening or covering any electrical box. Secure the cover with the appropriate screws for the box type and ensure all conductors are properly contained before closing. Do not use this blank cover as a substitute for a listed cover where a device or fixture is required.

Technical Specifications

• Cover Configuration: Two-Gang Blank
• Box Size: 4 inches square
• Raised Height: 0.5 inches
• Volume: 6.1 cubic inches
• Material: Non-Metallic
• Color: Blue
• UPC: 034481101024

Standard Information

• Brand: ABB
• Manufacturer Part Number: A420