My friends Big Country came with one as well, but my Big Horn did not have any! I went to a industrial drain supply company and purchased two five inch drain pipes, a screw on adapter and an end cap. At the hardware store I purchased heavy duty plumbers tape and stainless steal screws, washers, and locknuts. $160 later I have two storage tubes that the sewer hoses and all fittings fit into. You will have to cut the tubes to length. I used a hand saw. The cost of the manufactured tubes that are long enough is more and the shipping cost is in the stratosphere. Of all the pictures I have taken, I never took a picture of them. I drill 1/2" holes across the threaded ends, while the ends were screwed in. I use a piece of romex 12ga wire bent to keep the end from unscrewing while driving.