GREENSCAPES GS-404 Filter Fabric is a non-woven geotextile allowing drainage of stormwater from the growing media to the water management layer. In addition to retaining the fines of the growing media, it provides excellent laminar flow. GS404 maintains separation and provides a cushioning layer between the growing media from the water management layer. The geotextile is produced from a synthetic fabric that is chemically resistant to typical acid and alkali soil conditions and will not degrade over time from nutrients that may wash through the growing media.