Arvis Eco. An alternative to pervious paving, the dRain Joint drainage channel system installs in a driveway or walkway like a standard expansion joint and provides an outlet for surface water to be directed to a drainage bed and collected and held or allowed to percolate back into the soil. The drain, which offers a flow rate of more than 2 gallons per minute per linear foot, is made with non-deteriorating aluminum alloy 6061. A filter layer captures sediment and can be removed for cleaning and reinstalled. 317.584.4040. www.arviseco.com.