Emsco's Rescue™ Deluxe Rain Barrel Rainwater Collection System is earth-friendly and money-saving at the same time. This downspout diverter kit fits either a 2 in. x 3 in. or 3 in. x 4 in. downspout. Use your own barrel to collect rainwater during a rainfall. Kit includes Rescue Dual Diverter, connection hose, connection grommets and instructions