I can't believe the factory didn't make enough room for a basic sewer hose and accessories. But in either case, I purchased a SantiTube but because the mounting brackets come fixed it limited where I could install it. I originally wanted to mount it underneath near the Black Water valve.
So I ended up mounting it on the rear bumper and because of the ladder I could only get 59" but that holds the Rhino and the accessories you see in the picture. But its tight, and another inch would be perfect.
The PVC tube is a dull color and I wish it was like a normal PVC tube that looks shiny. If I had to do it over I think I would consider this other company that allows you to make your own. Or ask Santitube to provide additional support brackets.
Sanitubes / Sewer Hose Carriers / NEW!! SUPER-SLIDER Adjustable SUPER-TUBE - DW Inc.
Tube Door Kits for Schedule 40 PVC Storage Tubes | US Tube Doors