Universal Downspout to Drain Pipe Tile Adapter (Black, 2x3x4) Our Universal Downspout Tile Adapters are Perfect for Making the Transition from the Downspout to your Drain Tile. These Adapters are Slightly Over Sized for a 2x3 inch Downspout to Make it Easy to Slip the Downspout in to Fitting Wider Collar Hides End of Drain Pipe For use with4 inch Corrugated Pipe, PVC Schedule 40, SDR 28 & 35 Sewer Pipe. This is for 2x3 Downspout to 4 inch Round Drain Pipe, see other listings by Rale manufacturing for other sizes available