European-style household electrical boxes typically use 86×86 mm faceplates with 60 mm mounting centers and depths ranging from 46 mm to 66 mm.

Typical Dimensions

European-style wall boxes are designed to accommodate standard outlets, switches, and modular devices. The most common faceplate size is 86×86 mm, with mounting centers spaced 60 mm apart (sometimes noted as 60.3 mm) to align with device screws and wall plates . Depth options vary depending on wall type and installation requirements:

• 46 mm for shallow installations in solid walls
• 66 mm for deeper installations or when multiple conductors are present
• Some manufacturers also offer 35–47 mm for surface-mounted boxes

Multi-Gang and Modular Configurations

European boxes can be combined to create multi-gang arrangements, allowing multiple switches or outlets in a single row or stack. Modular devices, including GFCI/RCD outlets, can fit within these standard boxes, provided the depth and mounting centers are compatible .

Installation Considerations

• Wall type: Solid walls typically use round or square back boxes, while drywall may use adjustable or clip-in boxes.
• Cable space: Ensure sufficient internal volume for wiring, splices, and future upgrades.
• Compatibility: Always verify the device depth and mounting alignment with the chosen box to avoid installation issues .

Summary

For most European households, the standard wall box is 86×86 mm with 60 mm mounting centers, and depths generally range from 46 mm to 66 mm, with options for surface-mounted or modular devices. Multi-gang configurations are supported by connecting individual boxes or using specialized multi-gang enclosures .