Electrical mounting box Simet with mounting plate for 60 mm or 18 kg/m³ EPS20 insulation (model 83113003)

Simet electrical mounting box model 83113003 is intended for flush mounting of sockets, switches and junctions in external walls with EPS20 polystyrene insulation. The unit is designed to be fitted into façades insulated with 60 mm thick or 18 kg/m³ density EPS20, providing a recessed enclosure that keeps wiring and devices set back from the finished exterior surface. The package includes a mounting plate for secure fixing of the box within the insulation layer and to the supporting substrate.

Advantages

The mounting box features a purpose-built mounting plate that simplifies mechanical fixing in thermal insulation systems and maintains correct installation depth for flush-mounted electrical devices. Its shape and material compatibility with EPS20 ensure reliable positioning and reduce the risk of thermal bridging or deformation of the insulation. The recessed design allows neat installation of standard electrical mechanisms while preserving the continuity of the insulation layer.

Suitable for

• Flush installation of electrical sockets and switches in externally insulated façades
• Indoor and outdoor walls insulated with 60 mm EPS20 (18 kg/m³) polystyrene
• Situations requiring a mounting plate to fix the enclosure within the insulation layer

Key specifications

• Compatible insulation thickness: 60 mm
• Recommended insulation density: 18 kg/m³ (EPS20)
• Design: recessed mounting box for flush devices
• Includes mounting plate for secure fixation
• Application: external wall façades with thermal insulation

How to use

Cut an opening in the EPS20 insulation and the underlying substrate to the dimensions recommended for the mounting box. Position the mounting box so the front edge aligns with the planned finished surface, and use the supplied mounting plate to secure the box in the insulation layer and to the substrate according to local installation practices. Route electrical cables into the box through the appropriate knockouts or openings, and fit the required flush-mounted devices (sockets, switches, or junction boxes). Ensure mechanical fixings are suitable for the substrate and that the box is firmly supported before closing with faceplates and finishing the façade.

Usage recommendations

Verify compatibility of device dimensions and the insulation system before installation. Follow applicable national electrical and building regulations, use appropriate fixings for the substrate, and ensure weatherproofing and sealing around the finished installation where required for external façades.