20mm Drainage cell✔

500mm X 250mm X 20mm 

Material : Hi-Impact Polypropylene 

Compressive Strength / m2: Above 120 tons Tested

Weight:  225 grams

Flow rate: 8 L/S/Meter [email protected]%gradient

Surface Void Area: Above 70%

Internal Void area: Above 90%

Biological Resistance: Excellent resistant towards algae and mould 

Chemical Resistance: Excellent resistance to acid,alkalies,mineral oil and bitumen

Service Temperature: -10deg C to 80deg C