Distribution area of Serius surface boxes

Customers from more than 20 countries are installing our surface boxes
successfully since years. They trust in quality from SERIUS.

Our premium surface boxes

No slots no fractures will appear later after installations due that the expansion coefficient of our housings is equal to asphalt. Ensured by the use of pure synthetic material with 30% fiberglass reinforced.


  • Installation without additional technical device
  • One person installation possible – less manpower
  • Self-fixing surface boxes
  • Weather and dirt resistant
  • Long lasting and maintenance-free
  • Enable to roll into the asphalt.
  • Sealing - permanently between the inner- and the outer part.

Surface boxes made in Germany

highest quality for road construction

according to

Our highest quality of surface boxes for road construction even up to the class D 400.

High heat resistant

The main body of our surface boxes are made of extra thick synthetic material with 30% fiber glass contents. This makes them particularly heat-resistant over a period of 15 minutes up to a temperature of 245 ° Celsius. Without harming the surface boxes. No gaps between asphalt and the surface boxes after cooling down of the asphalt layers.
In result no repairs.

Height adjustable

The height-adjustable surface boxes suitable for installation by one person only and can be embedded without inserting dirt and dust or gravel in between the inner and outer part of surface boxes due sealing ring with dual function. Keeping the surface boxes on its level while installation and also protecting from inserting dirt in between. Height-adjustable models are for the road caps 4055,4056,4057,4058,4059,3581 available, also in grip version with or without extra wide neck on the top.

Advantages of Serius surface boxes:

  • Self-locking adjustable caps reduce the risk of injury
  • Made in Germany
  • High quality through the free access of the controlling tools (keys ect.)
  • Precision matching of the components
  • Longitudinal axis alignment is possible depending on the extension height up to 4 °
  • No loose parts everything in one piece

Serius surface boxes and the asphalt – a solid bond between our reinforced synthetic material (housing) and the asphalt layers.

  • solid durable connection between the body of the surface box and the asphalt even under heavy traffic.
  • nor slots nor fractures will appear later after installations.
  • no reconditioning necessary after installation. Means saving costs.
  • Asphalt temperature should not be below 140 ° C during installation. Otherwise the surface boxes material might not solid connected to the asphalt. Serius surface boxes loves temperature up to 245° C.
  • Please obey the installation manuals strictly.