Greenflo is a quality knitted filter sock for fitting over perforated round drainage pipes used in road edge and subsoil drainage applications.

Greenflo is manufactured to conform to RTA (Roads and Traffic Authority) QA Specification 3553 and is available in 100m roll format or on preloaded tubes to effect quick and simple placement onto round pipe drains.


Greenflo is designed to filter the fine particles contained within the subsoil drain thereby limiting sediment build up within the drainage pipe.


Drainage applications include roads, retaining walls, sports ovals, general landscaping or D.I.Y projects.


  • Limits sand intrusion pipe
  • Easy to install over perforated pipe
  • Available on preloaded cores
  • Also available in 100m roll form for price savings
  • Tested to RTA3553 Standards


Greenflo Filter sock is supplied in lengths of 30m preloaded on tubes for 65mm, 110mm and 160mm diameter perforated drainage pipes. The preloaded tubes help speed up the placement of the filter sock over the round drainage pipe.