USA-Made Duplex + GFCI / Decora®* Style Combination Raised Covers for 4x4 Metal Electrical Boxes
These high-quality raised steel covers are designed specifically for combination installations where a standard duplex receptacle and a GFCI/block/Decora®-style device must be mounted together on the same 4-inch square metal electrical box. Each cover features crushed corners for a secure, precise fit on both drawn and welded 4x4 metal boxes, providing the correct raised depths and openings needed for clean, code-compliant exposed-work installations.
Professional Duplex + GFCI / Decora® Combination Covers
This collection includes USA-made raised steel covers engineered for two-device configurations on a single 4x4 metal electrical box. These covers allow you to mount a standard duplex receptacle on one side and a GFCI, decorator-style, or Decora®-style device on the other. They are ideal for installations that require two different device types in the same location while maintaining durability and proper alignment.
Understanding the GFCI / Block / Decora® Opening
The rectangular opening in these covers is known by several names within the electrical industry, including:
- GFCI opening
- Block opening
- Decorator opening
- Decora® opening
All of these terms refer to the same standardized, large rectangular opening used for GFCI outlets and Decora®-style switches, dimmers, smart controls, and specialty devices.
Built for 4x4 Metal Boxes
All combination covers in this collection are designed to fit:
- 4x4 drawn steel boxes
- 4x4 welded steel boxes
- 4-inch square metal junction boxes used with EMT, rigid, or MC conduit
The covers themselves include crushed corners, ensuring proper seating, precise alignment, and a secure connection to the metal box.
When Are Duplex + GFCI / Decora® Combination Covers Used?
These dual-device raised covers are used whenever both a standard duplex receptacle and a GFCI or Decora®-style device must be mounted on the same 4x4 metal electrical box. They provide the correct raised depths, spacing, and openings required for these devices while also allowing the electrical box to function as a junction and splicing point.
This configuration is common in exposed-work applications, where conduit is surface-mounted and electrical devices are installed directly onto the metal box rather than recessed into the wall.
Typical applications include:
- Industrial machinery and equipment setups needing both an outlet and a control switch
- Workshops, production floors, and warehouses
- Commercial utility rooms and service areas
- Garages, basements, and mechanical rooms
- Any location requiring dual-function control and power in a single exposed-work box
Made in the USA for Strength and Reliability
Every cover in this collection is made from heavy-duty USA steel and built for long-term performance. This ensures:
- Rigid construction suitable for high-use commercial and industrial environments
- Accurate device alignment for both duplex and Decora®-style devices
- Durability against impact, vibration, and harsh conditions
- Consistent quality for clean, professional installations
Why Electricians Prefer These Combination Covers
- Perfect for 4x4 exposed-work metal boxes
- Crushed-corner construction for secure mounting (on the covers)
- Correct raised depths for both device types
- Compatible with standard duplex and Decora®/GFCI devices
- Ideal for industrial, commercial, and utility conduit systems
Shop With Confidence at Wallplate.Store
Wallplate.Store specializes in high-quality, USA-made metal covers for exposed-work conduit installations. Our combination Duplex + GFCI/Decora® covers are trusted by electricians, contractors, industrial plants, and facility maintenance teams nationwide.
Browse the collection above to find the perfect duplex + GFCI/Decora® raised cover for your 4x4 metal electrical box installation.
*Decora® is a registered trademark of Leviton Manufacturing Co., Inc. This product is not manufactured, authorized, or endorsed by Leviton.