Keep sediment, hydrocarbons and other pollutants out of the stormwater system. This large sediment accumulation pocket holds up to 18kg of silt, sediment and rubbish as well as 3.5L of oil and grease. Built-in overflow ports avoid flooding in heavy rain events. Sewn-in, lift-out straps make removal easy and prevent the Drain Guard from falling into the inlet. Simply lift grate, insert Drain Guard and replace grate to hold Drain Guard in place. Trim excess fabric if desired.