Enpurion FlexBasin (TM) Stormwater Catch Basin Insert, COMPLETE - Custom Fabricated to YOUR specification. Includes frame, liner and Enpurion MT metals / oils treatment media. These are suitable for industrial and commercial stormwater treatment in parking lots with transportation and architectural sources of metals (zinc, copper and lead) and oils. You can add Enpurion GAC, ZnIX, or MX pillows to meet almost any treatment need.