%
Volume
The design allows for a void ratio of 95%. One module holds a total of approximately 11.87 litres of water.
Design
Robust design delivers outstanding load results. Fully trafficable down to a cover depth of only 200 mm.
Stackable
Delivered flat packed as standard. Also available partially assembled, i.e. 4 composite panels (1x1 m), for shorter installation times.
Simplicity
Smart design minimises the number of components. Simple assembly using reversible modules.
Sustainability
Made from recycled PP with good UV and chemical resistance; combined with 100% renewable energy, it has a minimal carbon footprint. Designed to last for over 50 years.
Compatibility
Compatible with our other stormwater attenuation systems. Smart combinations of variants give you a cost-effective overall solution for your needs.
HD Void – Your robust choice!
Product information
HD Void is our most robust solution for infiltration and/or attenuation. Effective void ratio of 95%. Very easy to install; simply slide the panels together using the integrated self-locking clips and secure them vertically using pipe plugs. The required pipe connections are made via adaptors.
Its unique design, combined with its in-house developed plastic compound, ensures that this is likely the most robust system on the market. It can actually be installed with a cover depth of down to 200 mm in fully trafficable applications, and thus represents the ultimate option where groundwater levels are high, for example. Each individual module has a volume of approximately 12.5 litres.
Very flexible design
Extra robust construction
Modular building concept
Can handle extremely shallow cover depths
Can be easily combined with other systems
In-house developed ageing-resistant plastic material
Simple
Double
Triple
6 modules
8 modules
Loading table/Product data
Average weight/module (kg)
Maximum load side (kN/m²)
Maximum load over time* (kN/m2)
My cover depth (mm)
Dimensions (mm)
Gross water volume (l)
Net water volume (l)
HD Void
- Void ratio 95%
*= Testing / documentation corresponds to a minimum installed service life of 25 years.
















