Simplify your specification with our free online design tools.

GRAF are here to make your job easy, providing free configuration tools that allow you to customise and specify your tailored water management solution. 

Stormwater OSD
GRAF’s COSMA OSD Configurator allows you to customise your stormwater OSD or infiltration system using our EcoBloc SMART range.

Surface Drainage
Allow the Hauraton Surface Drainage Software to calculate and specify your drainage requirements in as little as three clicks!