Water Retention Box WRB 85i

Infiltration trough made of recycled PP intended for surface drainage in combination with a Flow Control System; high water retention potential, used for extensive green roofs with 0° roof pitch.


Material recycled PP (polypropylene)
Compressive strength
(DIN ISO 25619-2)
approx. 825 kN/m² with approx.
10 % compression
Discharge capacityRoof pitch 2% = 6.30 l/s*m
Nominal thicknessapprox. 85 mm
Grammageapprox. 5.6 kg/m²