Premium USA-Made GFCI / Decora®* Style (Decorator) Raised Covers for 4x4 Steel Electrical Boxes
These professional-grade raised steel covers are engineered specifically for 4-inch square metal electrical boxes used in exposed-work applications. Designed with crushed corners for a precise fit on both drawn and welded 4x4 metal boxes, these covers allow you to mount a GFCI, decorator-style device, or Decora®*-style wiring device directly onto the box while maintaining space for splicing and junction work.
Professional GFCI / Block / Rocker Covers for Exposed-Work Installations
This collection features USA-made raised steel covers designed exclusively for 4x4 metal electrical boxes—ideal for commercial, industrial, and utility applications. These functional device-mounting covers allow installers to mount a GFCI outlet, Decora®*-style switch, dimmer, smart switch, decorator-style receptacle, or other wiring device directly to the cover, which then mounts to the 4x4 box.
Also Known as GFCI, Block, Decorator, or Decora®* Openings
The large rectangular opening on these covers is referred to by many names in the electrical industry, including:
- GFCI opening
- Decorator opening
- Block opening
- Rocker opening
All of these terms describe the same standardized rectangular device opening used for GFCI receptacles and Decora® switches and devices.
Designed for 4x4 Metal Boxes
All covers in this collection are engineered to fit:
- 4x4 drawn metal boxes
- 4x4 welded metal boxes
- 4x4 junction boxes for conduit systems
The crushed-corner design ensures a tight, professional, vibration-resistant installation on surface-mounted conduit systems.
When Are GFCI / Decora®* Style Covers Used?
These raised covers are used whenever a GFCI or Decora®-style wiring device needs to be surface-mounted onto a 4x4 metal electrical box. They provide the correct raised depth and standardized rectangular device opening while also providing adequate space inside the box for wiring and splicing.
They are essential in exposed-work installations where electrical conduit is mounted on the surface of the wall instead of inside it. This includes brick walls, concrete block walls, industrial structures, utility rooms, and any location where recessing a box is unnecessary or impractical.
Typical applications include:
- Mounting GFCI receptacles on brick, block, concrete, or wood walls
- Installing Decora®-style switches, smart switches, timers, and dimmers
- Commercial and industrial rigid or EMT conduit systems
- Warehouses, factories, production floors, and workshops
- Garages, basements, and mechanical rooms
- Controlling lighting or machinery via Decora®-style devices
Unlike mud rings (used behind sheetrock) or blank plates (used when no device is needed), these covers are designed so the wiring device mounts directly to the cover, and the cover mounts to the box—providing a clean, code-compliant exposed-work installation.
Made in the USA for Superior Quality
Every cover in this collection is manufactured in the United States using high-grade steel. This ensures:
- Excellent structural integrity
- Accurate device alignment and spacing
- Consistent manufacturing tolerances
- Long-term durability even in harsh environments
Why Electricians Choose These 4x4 Raised Covers
- Decora® / GFCI-compatible opening for standardized wiring devices
- Crushed corners for secure installation
- Heavy-duty USA-made steel for long-lasting reliability
- Perfect for exposed conduit systems in commercial and industrial settings
- Fast installation with properly spaced device mounting holes
Shop With Confidence at Wallplate.Store
Wallplate.Store specializes in premium, USA-made metal electrical covers, including one of the largest selections online for exposed-work 4x4 box applications. Our products are trusted by electricians, contractors, property managers, and industrial facilities nationwide.
Browse the collection above to find the perfect 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.