This was a recommended addition to my purchase of the "Frigidaire FAD704DWD Energy Star 70-pint Dehumidifier".  I use a gravity drain to a French Drain in the basement.  The dehumidifier is about 10' from a hole into the drain and this hose did the job nicely.  It comes rolled up and I had to run hot water thru it and then lay it out on the blacktop driveway in the hot sun to get it to lay straight.